diff --git a/Build.md b/Build.md
index d5b443a79..7c908606d 100644
--- a/Build.md
+++ b/Build.md
@@ -1,32 +1,32 @@
-# Install CMake
+# Build Instructions
+## Install CMake
 Asset-Importer-Lib can be build for a lot of different platforms. We are using cmake to generate the build environment for these via cmake. So you have to make sure that you have a working cmake-installation on your system. You can download it at https://cmake.org/ or for linux install it via
-```
+```bash
 sudo apt-get install cmake
 ```
 
-# Get the source
+## Get the source
 Make sure you have a working git-installation. Open a command prompt and clone the Asset-Importer-Lib via:
-```
+```bash
 git clone https://github.com/assimp/assimp.git
 ```
 
-# Build instructions for Windows with Visual-Studio
+## Build instructions for Windows with Visual-Studio
 
 First you have to install Visual-Studio on your windows-system. You can get the Community-Version for free here: https://visualstudio.microsoft.com/de/downloads/
 To generate the build environment for your IDE open a command prompt, navigate to your repo and type:
-```
-> cmake CMakeLists.txt
+```bash
+cmake CMakeLists.txt
 ```
 This will generate the project files for the visual studio. All dependencies used to build Asset-IMporter-Lib shall be part of the repo. If you want to use you own zlib.installation this is possible as well. Check the options for it.
 
-# Build instructions for Windows with UWP
-See https://stackoverflow.com/questions/40803170/cmake-uwp-using-cmake-to-build-universal-windows-app
+## Build instructions for Windows with UWP
+See <https://stackoverflow.com/questions/40803170/cmake-uwp-using-cmake-to-build-universal-windows-app>
 
-
-# Build instrcutions for Linux / Unix
+## Build instructions for Linux / Unix
 Open a terminal and got to your repository. You can generate the makefiles and build the library via:
 
-```
+```bash
 cmake CMakeLists.txt
 make -j4
 ```
@@ -34,7 +34,23 @@ The option -j descripes the number of parallel processes for the build. In this
 
 If you want to use a IDE for linux you can try QTCreator for instance. 
 
-# CMake build options
+## Build instructions for MinGW
+ Older versions of MinGW's compiler (e.g. 5.1.0) do not support the -mbig_obj flag 
+required to compile some of assimp's files, especially for debug builds.
+Version 7.3.0 of g++-mingw-w64 & gcc-mingw-w64 appears to work.
+
+Please see [CMake Cross Compiling](https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html#cross-compiling) for general information on CMake Toolchains.
+
+Some users have had success building assimp using MinGW on Linux using [polly](https://github.com/ruslo/polly/).
+
+The following toolchain, which is not maintained by assimp, seems to work on Linux: [linux-mingw-w64-gnuxx11.cmake](https://github.com/ruslo/polly/blob/master/linux-mingw-w64-gnuxx11.cmake)
+
+The following toolchain may or may not be helpful for building assimp using MinGW on Windows (untested):
+ [mingw-cxx17.cmake](https://github.com/ruslo/polly/blob/master/mingw-cxx17.cmake)
+
+Besides the toolchain, compilation should be the same as for Linux / Unix.
+
+## CMake build options
 The cmake-build-environment provides options to configure the build. The following options can be used:
 - **BUILD_SHARED_LIBS ( default ON )**: Generation of shared libs ( dll for windows, so for Linux ). Set this to OFF to get a static lib.
 - **BUILD_FRAMEWORK ( default OFF, MacOnly)**: Build package as Mac OS X Framework bundle
@@ -55,4 +71,3 @@ The cmake-build-environment provides options to configure the build. The followi
 - **INJECT_DEBUG_POSTFIX( default ON )**: Inject debug postfix in .a/.so lib names
 - **IGNORE_GIT_HASH ( default OFF )**: Don't call git to get the hash.
 - **ASSIMP_INSTALL_PDB ( default ON )**: Install MSVC debug files.
-
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c5d5b15b1..fa5842560 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -237,6 +237,11 @@ ELSEIF ( "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
   SET(CMAKE_CXX_FLAGS "-g -fvisibility=hidden -fPIC -fno-strict-aliasing -Wall -Wno-long-long -std=c++11 ${CMAKE_CXX_FLAGS}" )
   SET(CMAKE_C_FLAGS "-fPIC -fno-strict-aliasing ${CMAKE_C_FLAGS}")
 ELSEIF( CMAKE_COMPILER_IS_MINGW )
+  IF (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0)
+    message(FATAL_ERROR "MinGW is too old to be supported. Please update MinGW and try again.")
+  ELSEIF(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.3)
+    message(WARNING "MinGW is old, if you experience errors, update MinGW.")
+  ENDIF()
   SET( CMAKE_CXX_FLAGS "-fvisibility=hidden -fno-strict-aliasing -Wall -Wno-long-long -std=c++11 -Wa,-mbig-obj ${CMAKE_CXX_FLAGS}" )
   SET(CMAKE_C_FLAGS "-fPIC -fno-strict-aliasing ${CMAKE_C_FLAGS} ")
   ADD_DEFINITIONS( -U__STRICT_ANSI__ )
diff --git a/Readme.md b/Readme.md
index 8cd3c7cb3..19e43a3cb 100644
--- a/Readme.md
+++ b/Readme.md
@@ -17,6 +17,8 @@ A library to import and export various 3d-model-formats including scene-post-pro
 
 APIs are provided for C and C++. There are various bindings to other languages (C#, Java, Python, Delphi, D). Assimp also runs on Android and iOS.
 
+[Check the latest doc](https://assimp-docs.readthedocs.io/en/latest/).
+
 Additionally, assimp features various __mesh post processing tools__: normals and tangent space generation, triangulation, vertex cache locality optimization, removal of degenerate primitives and duplicate vertices, sorting by primitive type, merging of redundant materials and many more.
 
 This is the development repo containing the latest features and bugfixes. For productive use though, we recommend one of the stable releases available from [Github Assimp Releases](https://github.com/assimp/assimp/releases).
diff --git a/appveyor.yml b/appveyor.yml
index 78ef4da75..851d9c096 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -15,8 +15,8 @@ matrix:
     
 image:
   - Visual Studio 2013
-  - Previous Visual Studio 2015
-  - Previous Visual Studio 2017
+  - Visual Studio 2015
+  - Visual Studio 2017
     
 platform:
   - Win32
@@ -28,10 +28,10 @@ install:
   - set PATH=C:\Ruby24-x64\bin;%PATH%
   - set CMAKE_DEFINES -DASSIMP_WERROR=ON
   - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2013" set CMAKE_GENERATOR_NAME=Visual Studio 12 2013
-  - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Previous Visual Studio 2015" set CMAKE_GENERATOR_NAME=Visual Studio 14 2015
-  - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Previous Visual Studio 2017" set CMAKE_GENERATOR_NAME=Visual Studio 15 2017
+  - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2015" set CMAKE_GENERATOR_NAME=Visual Studio 14 2015
+  - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" set CMAKE_GENERATOR_NAME=Visual Studio 15 2017
   - if "%platform%"=="x64" set CMAKE_GENERATOR_NAME=%CMAKE_GENERATOR_NAME% Win64
-  - cmake %CMAKE_DEFINES% -G "%CMAKE_GENERATOR_NAME%"
+  - cmake %CMAKE_DEFINES% -G "%CMAKE_GENERATOR_NAME%" .
   - set PATH=%PATH%;"C:\\Program Files (x86)\\Inno Setup 5"
   - ps: Invoke-WebRequest -Uri https://download.microsoft.com/download/5/7/b/57b2947c-7221-4f33-b35e-2fc78cb10df4/vc_redist.x64.exe -OutFile .\packaging\windows-innosetup\vc_redist.x64.exe
   - ps: Invoke-WebRequest -Uri https://download.microsoft.com/download/1/d/8/1d8137db-b5bb-4925-8c5d-927424a2e4de/vc_redist.x86.exe -OutFile .\packaging\windows-innosetup\vc_redist.x86.exe
@@ -53,7 +53,13 @@ build:
   project: Assimp.sln
   
 after_build:
-  - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" iscc packaging\windows-innosetup\script.iss
+  - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" (
+        if "%platform%"=="x64" (
+            iscc packaging\windows-innosetup\script_x64.iss
+        ) else (
+            iscc packaging\windows-innosetup\script_x86.iss
+        )
+    )
   - 7z a assimp.7z bin\%CONFIGURATION%\* lib\%CONFIGURATION%\*
 
 test_script:
diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index 05f916abd..5a7838515 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -804,6 +804,18 @@ ADD_ASSIMP_IMPORTER( MMD
   MMDVmdParser.h
 )
 
+# Workaround for issue #2406 - force problematic large file to be optimized to prevent string table overflow error
+# Used -Os instead of -O2 as previous issues had mentioned, since -Os is roughly speaking -O2, excluding any
+# optimizations that take up extra space. Given that the issue is a string table overflowing, -Os seemed appropriate
+# Also, I'm not positive if both link & compile flags are needed, but this hopefully ensures that the issue should not
+# recur for edge cases such as static builds.
+if ((CMAKE_COMPILER_IS_MINGW) AND (CMAKE_BUILD_TYPE MATCHES Debug))
+  message("-- Applying MinGW StepFileGen1.cpp Debug Workaround")
+  SET_SOURCE_FILES_PROPERTIES(Importer/StepFile/StepFileGen1.cpp PROPERTIES COMPILE_FLAGS -Os )
+  SET_SOURCE_FILES_PROPERTIES(Importer/StepFile/StepFileGen1.cpp PROPERTIES LINK_FLAGS -Os )
+  SET_SOURCE_FILES_PROPERTIES(Importer/StepFile/StepFileGen1.cpp PROPERTIES STATIC_LIBRARY_FLAGS -Os )
+endif()
+
 ADD_ASSIMP_IMPORTER( STEP
     STEPFile.h
     Importer/StepFile/StepFileImporter.h
diff --git a/code/makefile.mingw b/code/makefile.mingw
deleted file mode 100644
index 711d57f57..000000000
--- a/code/makefile.mingw
+++ /dev/null
@@ -1,105 +0,0 @@
-### USE OF THIS MAKEFILE IS NOT RECOMMENDED.
-### It is no longer maintained. Use CMAKE instead.
-
-# ---------------------------------------------------------------------------
-# Makefile for Open Asset Import Library (MinGW32-make)
-# aramis_acg@users.sourceforge.net
-#   - just a quick'n'dirty one, could be buggy ...
-#
-# Usage: mingw32-make -f makefile.mingw <target> <macros>
-
-# TARGETS:
-#   all                  Build a shared so from the whole library
-#   clean                Cleanup object files, prepare for rebuild
-#   static               Build a static library (*.a)
-
-# MACROS: (make clean before you change one)
-#   NOBOOST=1            Build against boost workaround
-#   SINGLETHREADED=1     Build single-threaded library
-#   DEBUG=1              Build debug build of library
-# 
-# ---------------------------------------------------------------------------
-
-# C++ object files
-OBJECTS   := $(patsubst %.cpp,%.o,  $(wildcard *.cpp)) 
-OBJECTS   += $(patsubst %.cpp,%.o,  $(wildcard extra/*.cpp)) 
-OBJECTS   += $(patsubst %.cpp,%.o,  $(wildcard ./../contrib/irrXML/*.cpp)) 
-
-# C object files 
-OBJECTSC  := $(patsubst %.c,%.oc,   $(wildcard ./../contrib/zlib/*.c))
-OBJECTSC  += $(patsubst %.c,%.oc,   $(wildcard ./../contrib/ConvertUTF/*.c))
-OBJECTSC  += $(patsubst %.c,%.oc,   $(wildcard ./../contrib/unzip/*.c))
-
-# Include flags for gcc
-INCLUDEFLAGS =
-
-# Preprocessor defines for gcc
-DEFINEFLAGS = 
-
-# Suffix for the output binary, represents build type
-NAMESUFFIX = 
-
-# Output path for binaries
-BINPATH = ../bin/mingw/
-
-# GCC compiler flags 
-CPPFLAGS=-Wall 
-
-# Setup environment for noboost build
-ifeq ($(NOBOOST),1)
-	SINGLETHREADED = 1
-	INCLUDEFLAGS  += -I./BoostWorkaround/
-	DEFINEFLAGS   += -DASSIMP_BUILD_BOOST_WORKAROUND 
-#	NAMESUFFIX    += -noboost
-else
-	# adjust this manually if your boost is stored elsewhere
-	INCLUDEFLAGS  += -I"C:/Program Files/boost/boost_1_38"
-	#INCLUDEFLAGS  += -I"$(BOOST_DIR)"
-
-endif
-
-# Setup environment for st build
-ifeq ($(SINGLETHREADED),1)
-	DEFINEFLAGS   += -DASSIMP_BUILD_SINGLETHREADED
-#	NAMESUFFIX    += -st
-endif
-
-# Setup environment for debug build
-ifeq ($(DEBUG),1)
-	DEFINEFLAGS   += -D_DEBUG -DDEBUG
-	CPPFLAGS      += -g
-#	NAMESUFFIX    += -debug
-else
-	CPPFLAGS      += -O2 -s
-	DEFINEFLAGS   += -DNDEBUG -D_NDEBUG
-endif
-
-# Output name of shared library
-SHARED_TARGET = $(BINPATH)/libassimp$(NAMESUFFIX).so
-
-# Output name of static library
-STATIC = $(BINPATH)/libassimp$(NAMESUFFIX).a
-
-# target: all
-# usage : build a shared library (*.so)
-all:	$(SHARED_TARGET)
-
-$(SHARED_TARGET):  $(OBJECTS)  $(OBJECTSC)
-	gcc -o $@ $(OBJECTS) $(OBJECTSC) -shared -lstdc++ 
-%.o:%.cpp
-	$(CXX) -c  $(CPPFLAGS) $? -o $@ $(INCLUDEFLAGS) $(DEFINEFLAGS)
-%.oc:%.c
-	$(CXX) -x c -c -ansi $(CPPFLAGS) $? -o $@ 
-
-# target: clean
-# usage : cleanup all object files, prepare for a rebuild
-.PHONY: clean
-clean:
-	-del *.o .\..\contrib\irrXML\*.o .\..\contrib\zlib\*.oc .\..\contrib\unzip\*.oc .\..\contrib\ConvertUTF\*.oc
-
-# target: static
-# usage : build a static library (*.a)
-static:    $(STATIC) 
-$(STATIC):    $(OBJECTS) $(OBJECTSC)
-	ar rcs $@ $(OBJECTS) $(OBJECTSC)
-
diff --git a/include/assimp/color4.inl b/include/assimp/color4.inl
index 3192d55f3..afa53dcb5 100644
--- a/include/assimp/color4.inl
+++ b/include/assimp/color4.inl
@@ -85,6 +85,8 @@ AI_FORCE_INLINE TReal aiColor4t<TReal>::operator[](unsigned int i) const {
             return g;
         case 2:
             return b;
+        case 3:
+            return a;
         default:
             break;
     }
@@ -100,6 +102,8 @@ AI_FORCE_INLINE TReal& aiColor4t<TReal>::operator[](unsigned int i) {
             return g;
         case 2:
             return b;
+        case 3:
+            return a;
         default:
             break;
     }
diff --git a/packaging/windows-innosetup/script.iss b/packaging/windows-innosetup/script.iss
deleted file mode 100644
index 695740679..000000000
--- a/packaging/windows-innosetup/script.iss
+++ /dev/null
@@ -1,103 +0,0 @@
-; Setup script for use with Inno Setup.
-
-[Setup]
-AppName=Open Asset Import Library - SDK
-AppVerName=Open Asset Import Library - SDK (v4.1.0)
-DefaultDirName={pf}\Assimp
-DefaultGroupName=Assimp
-UninstallDisplayIcon={app}\bin\x86\assimp.exe
-OutputDir=out
-AppCopyright=Assimp Development Team
-SetupIconFile=..\..\tools\shared\assimp_tools_icon.ico
-WizardImageFile=compiler:WizModernImage-IS.BMP
-WizardSmallImageFile=compiler:WizModernSmallImage-IS.BMP
-LicenseFile=License.rtf
-OutputBaseFileName=assimp-sdk-4.1.0-setup
-VersionInfoVersion=4.1.0.0
-VersionInfoTextVersion=4.1.0
-VersionInfoCompany=Assimp Development Team
-ArchitecturesInstallIn64BitMode=x64
-
-[Types]
-Name: "full";    Description: "Full installation"
-Name: "compact"; Description: "Compact installation, no test models or language bindings"
-Name: "custom";  Description: "Custom installation"; Flags: iscustom
-
-[Components]
-Name: "main";        Description: "Main Files (32 and 64 Bit)"; Types: full compact custom; Flags: fixed
-Name: "tools";       Description: "Asset Viewer & Command Line Tools (32 and 64 Bit)"; Types: full compact
-Name: "help";        Description: "Help Files"; Types: full compact
-Name: "samples";     Description: "Samples"; Types: full
-Name: "test";        Description: "Test Models (BSD-licensed)"; Types: full
-Name: "test_nonbsd"; Description: "Test Models (other (free) licenses)"; Types: full
-;Name: "pyassimp";    Description: "Python Bindings"; Types: full
-;Name: "dassimp";     Description: "D Bindings"; Types: full
-;Name: "assimp_net";  Description: "C#/.NET Bindings"; Types: full
-
-[Run]
-;Filename: "{app}\stub\vc_redist.x86.exe"; Parameters: "/qb"; StatusMsg: "Installing VS2017 redistributable package (32 Bit)"; Check: not IsWin64
-Filename: "{app}\stub\vc_redist.x64.exe"; Parameters: "/qb"; StatusMsg: "Installing VS2017 redistributable package (64 Bit)"; Check: IsWin64
-
-[Files]
-Source: "readme_installer.txt"; DestDir: "{app}"; Flags: isreadme
-
-; Installer stub
-;Source: "vc_redist.x86.exe"; DestDir: "{app}\stub\"; Check: not IsWin64
-Source: "vc_redist.x64.exe"; DestDir: "{app}\stub\"; Check: IsWin64
-
-; Common stuff
-Source: "..\..\CREDITS"; DestDir: "{app}"
-Source: "..\..\LICENSE"; DestDir: "{app}"
-Source: "..\..\README"; DestDir: "{app}"
-Source: "WEB"; DestDir: "{app}"
-
-Source: "..\..\scripts\*"; DestDir: "{app}\scripts"; Flags: recursesubdirs
-
-; x86 binaries
-;Source: "..\..\bin\release\x86\assimp-vc140-mt.dll";  DestDir: "{app}\bin\x86"
-;Source: "..\..\bin\release\x86\assimp_viewer.exe";    DestDir: "{app}\bin\x86"; Components: tools
-;Source: "C:\Windows\SysWOW64\D3DCompiler_42.dll";     DestDir: "{app}\bin\x86"; Components: tools
-;Source: "C:\Windows\SysWOW64\D3DX9_42.dll";           DestDir: "{app}\bin\x86"; Components: tools
-;Source: "..\..\bin\release\x86\assimp.exe";           DestDir: "{app}\bin\x86"; Components: tools
-
-; x64 binaries
-Source: "..\..\bin\release\assimp-vc140-mt.dll";  DestDir: "{app}\bin\x64"
-Source: "..\..\bin\release\assimp_viewer.exe";    DestDir: "{app}\bin\x64"; Components: tools
-Source: "C:\Windows\SysWOW64\D3DCompiler_42.dll"; DestDir: "{app}\bin\x64"; DestName: "D3DCompiler_42.dll"; Components: tools
-Source: "C:\Windows\SysWOW64\D3DX9_42.dll";       DestDir: "{app}\bin\x64"; DestName: "D3DX9_42.dll"; Components: tools
-Source: "..\..\bin\release\assimp.exe";           DestDir: "{app}\bin\x64"; Components: tools
-
-; Documentation
-;Source: "..\..\doc\AssimpDoc_Html\AssimpDoc.chm"; DestDir: "{app}\doc"; Components: help
-;Source: "..\..\doc\AssimpCmdDoc_Html\AssimpCmdDoc.chm"; DestDir: "{app}\doc"; Components: help
-;Source: "..\..\doc\datastructure.xml"; DestDir: "{app}\doc"; Components: help
-
-; Import libraries
-;Source: "..\..\lib\release\x86\assimp.lib"; DestDir: "{app}\lib\x86"
-Source: "..\..\lib\release\assimp-vc140-mt.lib"; DestDir: "{app}\lib\x64"
-
-; Samples
-Source: "..\..\samples\*"; DestDir: "{app}\samples"; Flags: recursesubdirs; Components: samples
-
-; Include files
-Source: "..\..\include\*"; DestDir: "{app}\include"; Flags: recursesubdirs
-
-; dAssimp
-;Source: "..\..\port\dAssimp\*"; DestDir: "{app}\port\D"; Flags: recursesubdirs; Components: dassimp
-
-; Assimp.NET
-;Source: "..\..\port\Assimp.NET\*"; DestDir: "{app}\port\C#"; Flags: recursesubdirs; Components: assimp_net
-
-; PyAssimp
-;Source: "..\..\port\PyAssimp\*"; DestDir: "{app}\port\Python"; Excludes: "*.pyc,*.dll"; Flags: recursesubdirs; Components: pyassimp
-
-; Test repository
-;Source: "..\..\test\models\*"; DestDir: "{app}\test\models"; Flags: recursesubdirs; Components: test
-;Source: "..\..\test\regression\*"; DestDir: "{app}\test\regression"; Flags: recursesubdirs; Components: test
-;Source: "..\..\test\models-nonbsd\*"; DestDir: "{app}\test\models-nonbsd"; Flags: recursesubdirs; Components: test_nonbsd
-
-[Icons]
-Name: "{group}\Assimp Manual"; Filename: "{app}\doc\AssimpDoc.chm" ; Components: help
-Name: "{group}\Assimp Command Line Manual"; Filename: "{app}\doc\AssimpCmdDoc.chm"; Components: help
-Name: "{group}\AssimpView"; Filename: "{app}\bin\x64\assimp_view.exe"; Components: tools; Check: IsWin64
-Name: "{group}\AssimpView"; Filename: "{app}\bin\x86\assimp_view.exe"; Components: tools; Check: not IsWin64
diff --git a/packaging/windows-innosetup/script_x64.iss b/packaging/windows-innosetup/script_x64.iss
new file mode 100644
index 000000000..cd4837f0a
--- /dev/null
+++ b/packaging/windows-innosetup/script_x64.iss
@@ -0,0 +1,71 @@
+; Setup script for use with Inno Setup.
+
+[Setup]
+AppName=Open Asset Import Library - SDK
+AppVerName=Open Asset Import Library - SDK (v4.1.0)
+DefaultDirName={pf}\Assimp
+DefaultGroupName=Assimp
+UninstallDisplayIcon={app}\bin\x86\assimp.exe
+OutputDir=out
+AppCopyright=Assimp Development Team
+SetupIconFile=..\..\tools\shared\assimp_tools_icon.ico
+WizardImageFile=compiler:WizModernImage-IS.BMP
+WizardSmallImageFile=compiler:WizModernSmallImage-IS.BMP
+LicenseFile=License.rtf
+OutputBaseFileName=assimp-sdk-4.1.0-setup
+VersionInfoVersion=4.1.0.0
+VersionInfoTextVersion=4.1.0
+VersionInfoCompany=Assimp Development Team
+ArchitecturesInstallIn64BitMode=x64
+
+[Types]
+Name: "full";    Description: "Full installation"
+Name: "compact"; Description: "Compact installation, no test models or language bindings"
+Name: "custom";  Description: "Custom installation"; Flags: iscustom
+
+[Components]
+Name: "main";        Description: "Main Files ( 64 Bit )"; Types: full compact custom; Flags: fixed
+Name: "tools";       Description: "Asset Viewer & Command Line Tools (32 and 64 Bit)"; Types: full compact
+Name: "help";        Description: "Help Files"; Types: full compact
+Name: "samples";     Description: "Samples"; Types: full
+Name: "test";        Description: "Test Models (BSD-licensed)"; Types: full
+Name: "test_nonbsd"; Description: "Test Models (other (free) licenses)"; Types: full
+
+[Run]
+Filename: "{app}\stub\vc_redist.x64.exe"; Parameters: "/qb"; StatusMsg: "Installing VS2017 redistributable package (64 Bit)"; Check: IsWin64
+
+[Files]
+Source: "readme_installer.txt"; DestDir: "{app}"; Flags: isreadme
+
+; Installer stub
+Source: "vc_redist.x64.exe"; DestDir: "{app}\stub\"; Check: IsWin64
+
+; Common stuff
+Source: "..\..\CREDITS"; DestDir: "{app}"
+Source: "..\..\LICENSE"; DestDir: "{app}"
+Source: "..\..\README"; DestDir: "{app}"
+Source: "WEB"; DestDir: "{app}"
+
+Source: "..\..\scripts\*"; DestDir: "{app}\scripts"; Flags: recursesubdirs
+
+; x64 binaries
+Source: "..\..\bin\release\assimp-vc141-mt.dll";  DestDir: "{app}\bin\x64"
+Source: "..\..\bin\release\assimp_viewer.exe";    DestDir: "{app}\bin\x64"; Components: tools
+Source: "C:\Windows\SysWOW64\D3DCompiler_42.dll"; DestDir: "{app}\bin\x64"; DestName: "D3DCompiler_42.dll"; Components: tools
+Source: "C:\Windows\SysWOW64\D3DX9_42.dll";       DestDir: "{app}\bin\x64"; DestName: "D3DX9_42.dll"; Components: tools
+Source: "..\..\bin\release\assimp.exe";           DestDir: "{app}\bin\x64"; Components: tools
+
+; Import libraries
+Source: "..\..\lib\release\assimp-vc141-mt.lib"; DestDir: "{app}\lib\x64"
+
+; Samples
+Source: "..\..\samples\*"; DestDir: "{app}\samples"; Flags: recursesubdirs; Components: samples
+
+; Include files
+Source: "..\..\include\*"; DestDir: "{app}\include"; Flags: recursesubdirs
+
+[Icons]
+; Name: "{group}\Assimp Manual"; Filename: "{app}\doc\AssimpDoc.chm" ; Components: help
+; Name: "{group}\Assimp Command Line Manual"; Filename: "{app}\doc\AssimpCmdDoc.chm"; Components: help
+; Name: "{group}\AssimpView"; Filename: "{app}\bin\x64\assimp_view.exe"; Components: tools; Check: IsWin64
+; Name: "{group}\AssimpView"; Filename: "{app}\bin\x86\assimp_view.exe"; Components: tools; Check: not IsWin64
diff --git a/packaging/windows-innosetup/script_x86.iss b/packaging/windows-innosetup/script_x86.iss
new file mode 100644
index 000000000..9aca78550
--- /dev/null
+++ b/packaging/windows-innosetup/script_x86.iss
@@ -0,0 +1,72 @@
+; Setup script for use with Inno Setup.
+
+[Setup]
+AppName=Open Asset Import Library - SDK
+AppVerName=Open Asset Import Library - SDK (v4.1.0)
+DefaultDirName={pf}\Assimp
+DefaultGroupName=Assimp
+UninstallDisplayIcon={app}\bin\x86\assimp.exe
+OutputDir=out
+AppCopyright=Assimp Development Team
+SetupIconFile=..\..\tools\shared\assimp_tools_icon.ico
+WizardImageFile=compiler:WizModernImage-IS.BMP
+WizardSmallImageFile=compiler:WizModernSmallImage-IS.BMP
+LicenseFile=License.rtf
+OutputBaseFileName=assimp-sdk-4.1.0-setup
+VersionInfoVersion=4.1.0.0
+VersionInfoTextVersion=4.1.0
+VersionInfoCompany=Assimp Development Team
+ArchitecturesInstallIn64BitMode=x64
+
+[Types]
+Name: "full";    Description: "Full installation"
+Name: "compact"; Description: "Compact installation, no test models or language bindings"
+Name: "custom";  Description: "Custom installation"; Flags: iscustom
+
+[Components]
+Name: "main";        Description: "Main Files (32 and 64 Bit)"; Types: full compact custom; Flags: fixed
+Name: "tools";       Description: "Asset Viewer & Command Line Tools (32 and 64 Bit)"; Types: full compact
+Name: "help";        Description: "Help Files"; Types: full compact
+Name: "samples";     Description: "Samples"; Types: full
+Name: "test";        Description: "Test Models (BSD-licensed)"; Types: full
+Name: "test_nonbsd"; Description: "Test Models (other (free) licenses)"; Types: full
+
+[Run]
+Filename: "{app}\stub\vc_redist.x86.exe"; Parameters: "/qb"; StatusMsg: "Installing VS2017 redistributable package (32 Bit)"; Check: not IsWin64
+
+[Files]
+Source: "readme_installer.txt"; DestDir: "{app}"; Flags: isreadme
+
+; Installer stub
+Source: "vc_redist.x86.exe"; DestDir: "{app}\stub\"; Check: not IsWin64
+
+; Common stuff
+Source: "..\..\CREDITS"; DestDir: "{app}"
+Source: "..\..\LICENSE"; DestDir: "{app}"
+Source: "..\..\README"; DestDir: "{app}"
+Source: "WEB"; DestDir: "{app}"
+
+Source: "..\..\scripts\*"; DestDir: "{app}\scripts"; Flags: recursesubdirs
+
+; x86 binaries
+Source: "..\..\bin\release\assimp-vc141-mt.dll";  DestDir: "{app}\bin\x86"
+Source: "..\..\bin\release\assimp_viewer.exe";    DestDir: "{app}\bin\x86"; Components: tools
+Source: "C:\Windows\SysWOW64\D3DCompiler_42.dll";     DestDir: "{app}\bin\x86"; Components: tools
+Source: "C:\Windows\SysWOW64\D3DX9_42.dll";           DestDir: "{app}\bin\x86"; Components: tools
+Source: "..\..\bin\release\assimp.exe";           DestDir: "{app}\bin\x86"; Components: tools
+
+
+; Import libraries
+Source: "..\..\lib\release\assimp-vc141-mt.lib"; DestDir: "{app}\lib\x86"
+
+; Samples
+Source: "..\..\samples\*"; DestDir: "{app}\samples"; Flags: recursesubdirs; Components: samples
+
+; Include files
+Source: "..\..\include\*"; DestDir: "{app}\include"; Flags: recursesubdirs
+
+[Icons]
+; Name: "{group}\Assimp Manual"; Filename: "{app}\doc\AssimpDoc.chm" ; Components: help
+; Name: "{group}\Assimp Command Line Manual"; Filename: "{app}\doc\AssimpCmdDoc.chm"; Components: help
+; Name: "{group}\AssimpView"; Filename: "{app}\bin\x64\assimp_view.exe"; Components: tools; Check: IsWin64
+; Name: "{group}\AssimpView"; Filename: "{app}\bin\x86\assimp_view.exe"; Components: tools; Check: not IsWin64
diff --git a/port/AndroidJNI/README.md b/port/AndroidJNI/README.md
index 7998fa3ef..0b95efd04 100644
--- a/port/AndroidJNI/README.md
+++ b/port/AndroidJNI/README.md
@@ -1,6 +1,6 @@
 Build Asset Importer Lib for Android
 ====================================
-This module provides a fascade for the io-stream-access to files behind the android-asset-management within 
+This module provides a facade for the io-stream-access to files behind the android-asset-management within 
 an Android-native application.
 - It is built as a static library
 - It requires Android NDK with android API > 9 support.
diff --git a/port/PyAssimp/pyassimp/core.py b/port/PyAssimp/pyassimp/core.py
index ca6d8629a..44163a434 100644
--- a/port/PyAssimp/pyassimp/core.py
+++ b/port/PyAssimp/pyassimp/core.py
@@ -93,7 +93,7 @@ def _is_init_type(obj):
         return False
     tname = obj.__class__.__name__
     return not (tname[:2] == 'c_' or tname == 'Structure' \
-            or tname == 'POINTER') and not isinstance(obj,int)
+            or tname == 'POINTER') and not isinstance(obj, (int, str, bytes))
 
 def _init(self, target = None, parent = None):
     """