diff --git a/CMakeLists.txt b/CMakeLists.txt
index f01ea52ea..ecd131b8c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,9 +39,9 @@ SET(CMAKE_POLICY_DEFAULT_CMP0074 NEW)
 CMAKE_MINIMUM_REQUIRED( VERSION 3.0 )
 
 # Toggles the use of the hunter package manager
-option(HUNTER_ENABLED "Enable Hunter package manager support" OFF)
+option(ASSIMP_HUNTER_ENABLED "Enable Hunter package manager support" OFF)
 
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   include("cmake/HunterGate.cmake")
   HunterGate(
     URL "https://github.com/ruslo/hunter/archive/v0.23.176.tar.gz"
@@ -60,7 +60,7 @@ OPTION( BUILD_SHARED_LIBS
   ON
 )
 
-OPTION( BUILD_FRAMEWORK
+OPTION( ASSIMP_BUILD_FRAMEWORK
   "Build package as Mac OS X Framework bundle."
   OFF
 )
@@ -101,7 +101,7 @@ OPTION ( ASSIMP_COVERALLS
   OFF
 )
 OPTION( ASSIMP_INSTALL
-  "DIsable this if you want to use assimp as a submodule."
+  "Disable this if you want to use assimp as a submodule."
   ON
 )
 OPTION ( ASSIMP_ERROR_MAX
@@ -120,25 +120,25 @@ OPTION ( ASSIMP_UBSAN
   "Enable Undefined Behavior sanitizer."
   OFF
 )
-OPTION ( SYSTEM_IRRXML
+OPTION ( ASSIMP_SYSTEM_IRRXML
   "Use system installed Irrlicht/IrrXML library."
   OFF
 )
-OPTION ( BUILD_DOCS
+OPTION ( ASSIMP_BUILD_DOCS
   "Build documentation using Doxygen."
   OFF
 )
-OPTION( INJECT_DEBUG_POSTFIX
+OPTION( ASSIMP_INJECT_DEBUG_POSTFIX
   "Inject debug postfix in .a/.so/.dll lib names"
   ON
 )
 
-OPTION ( IGNORE_GIT_HASH
+OPTION ( ASSIMP_IGNORE_GIT_HASH
    "Don't call git to get the hash."
    OFF
 )
 
-IF (IOS AND NOT HUNTER_ENABLED)
+IF (IOS AND NOT ASSIMP_HUNTER_ENABLED)
   IF (NOT CMAKE_BUILD_TYPE)
     SET(CMAKE_BUILD_TYPE "Release")
   ENDIF ()
@@ -161,7 +161,7 @@ IF(MSVC)
   ENDIF()
 ENDIF()
 
-IF (BUILD_FRAMEWORK)
+IF (ASSIMP_BUILD_FRAMEWORK)
   SET (BUILD_SHARED_LIBS ON)
   MESSAGE(STATUS "Framework bundle building enabled")
 ENDIF()
@@ -181,12 +181,12 @@ SET (ASSIMP_VERSION ${ASSIMP_VERSION_MAJOR}.${ASSIMP_VERSION_MINOR}.${ASSIMP_VER
 SET (ASSIMP_SOVERSION 5)
 
 SET( ASSIMP_PACKAGE_VERSION "0" CACHE STRING "the package-specific version used for uploading the sources" )
-if(NOT HUNTER_ENABLED)
+if(NOT ASSIMP_HUNTER_ENABLED)
   # Enable C++11 support globally
   set_property( GLOBAL PROPERTY CXX_STANDARD 11 )
 endif()
 
-IF(NOT IGNORE_GIT_HASH)
+IF(NOT ASSIMP_IGNORE_GIT_HASH)
   # Get the current working branch
   EXECUTE_PROCESS(
     COMMAND git rev-parse --abbrev-ref HEAD
@@ -245,7 +245,7 @@ ENDIF()
 
 # Grouped compiler settings
 IF ((CMAKE_C_COMPILER_ID MATCHES "GNU") AND NOT CMAKE_COMPILER_IS_MINGW)
-  IF(NOT HUNTER_ENABLED)
+  IF(NOT ASSIMP_HUNTER_ENABLED)
     SET(CMAKE_CXX_FLAGS "-fPIC -std=c++0x ${CMAKE_CXX_FLAGS}")
     SET(CMAKE_C_FLAGS "-fPIC ${CMAKE_C_FLAGS}")
   ENDIF()
@@ -262,7 +262,7 @@ ELSEIF(MSVC)
   ENDIF()
   SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /D_DEBUG /Zi /Od")
 ELSEIF ( "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
-  IF(NOT HUNTER_ENABLED)
+  IF(NOT ASSIMP_HUNTER_ENABLED)
     SET(CMAKE_CXX_FLAGS "-fPIC -std=c++11 ${CMAKE_CXX_FLAGS}")
     SET(CMAKE_C_FLAGS "-fPIC ${CMAKE_C_FLAGS}")
   ENDIF()
@@ -274,7 +274,7 @@ ELSEIF( CMAKE_COMPILER_IS_MINGW )
   ELSEIF(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.3)
     message(WARNING "MinGW is old, if you experience errors, update MinGW.")
   ENDIF()
-  IF(NOT HUNTER_ENABLED)
+  IF(NOT ASSIMP_HUNTER_ENABLED)
     SET(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
     SET(CMAKE_C_FLAGS "-fPIC ${CMAKE_C_FLAGS}")
   ENDIF()
@@ -283,7 +283,7 @@ ELSEIF( CMAKE_COMPILER_IS_MINGW )
   ADD_DEFINITIONS( -U__STRICT_ANSI__ )
 ENDIF()
 
-IF ( IOS AND NOT HUNTER_ENABLED)
+IF ( IOS AND NOT ASSIMP_HUNTER_ENABLED)
   IF (CMAKE_BUILD_TYPE STREQUAL "Debug")
     SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fembed-bitcode -Og")
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fembed-bitcode -Og")
@@ -360,7 +360,7 @@ SET( ASSIMP_BIN_INSTALL_DIR "bin" CACHE STRING
 
 get_cmake_property(is_multi_config GENERATOR_IS_MULTI_CONFIG)
 
-IF (INJECT_DEBUG_POSTFIX AND (is_multi_config OR CMAKE_BUILD_TYPE STREQUAL "Debug"))
+IF (ASSIMP_INJECT_DEBUG_POSTFIX AND (is_multi_config OR CMAKE_BUILD_TYPE STREQUAL "Debug"))
   SET(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "Debug Postfix for lib, samples and tools")
 ELSE()
   SET(CMAKE_DEBUG_POSTFIX "" CACHE STRING "Debug Postfix for lib, samples and tools")
@@ -373,7 +373,7 @@ IF (NOT TARGET uninstall)
   ADD_CUSTOM_TARGET(uninstall "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
 ENDIF()
 
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   set(CONFIG_INSTALL_DIR "lib/cmake/${PROJECT_NAME}")
   set(INCLUDE_INSTALL_DIR "include")
 
@@ -440,18 +440,18 @@ ELSE()
     DESTINATION "${ASSIMP_LIB_INSTALL_DIR}/cmake/assimp-${ASSIMP_VERSION_MAJOR}.${ASSIMP_VERSION_MINOR}" COMPONENT ${LIBASSIMP-DEV_COMPONENT})
 ENDIF()
 
-IF( BUILD_DOCS )
+IF( ASSIMP_BUILD_DOCS )
   ADD_SUBDIRECTORY(doc)
 ENDIF()
 
 # Look for system installed irrXML
-IF ( SYSTEM_IRRXML )
+IF ( ASSIMP_SYSTEM_IRRXML )
   FIND_PACKAGE( IrrXML REQUIRED )
 ENDIF()
 
 # Search for external dependencies, and build them from source if not found
 # Search for zlib
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   hunter_add_package(ZLIB)
   find_package(ZLIB CONFIG REQUIRED)
 
@@ -575,7 +575,7 @@ ELSE ()
   ADD_DEFINITIONS( -DASSIMP_BUILD_NO_C4D_IMPORTER )
 ENDIF ()
 
-IF(NOT HUNTER_ENABLED)
+IF(NOT ASSIMP_HUNTER_ENABLED)
   ADD_SUBDIRECTORY(contrib)
 ENDIF()
 
diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index 0776b2b39..c872e7b20 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -886,7 +886,7 @@ SET( Extra_SRCS
 SOURCE_GROUP( Extra FILES ${Extra_SRCS})
 
 # irrXML
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   hunter_add_package(irrXML)
   find_package(irrXML CONFIG REQUIRED)
 ELSE()
@@ -894,7 +894,7 @@ ELSE()
 ENDIF()
 
 # utf8
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   hunter_add_package(utf8)
   find_package(utf8 CONFIG REQUIRED)
 ELSE()
@@ -902,7 +902,7 @@ ELSE()
 ENDIF()
 
 # polyclipping
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   hunter_add_package(polyclipping)
   find_package(polyclipping CONFIG REQUIRED)
 ELSE()
@@ -914,7 +914,7 @@ ELSE()
 ENDIF()
 
 # poly2tri
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   hunter_add_package(poly2tri)
   find_package(poly2tri CONFIG REQUIRED)
 ELSE()
@@ -935,7 +935,7 @@ ELSE()
 ENDIF()
 
 # minizip/unzip
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   hunter_add_package(minizip)
   find_package(minizip CONFIG REQUIRED)
 ELSE()
@@ -950,7 +950,7 @@ ELSE()
 ENDIF()
 
 # zip (https://github.com/kuba--/zip)
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   hunter_add_package(zip)
   find_package(zip CONFIG REQUIRED)
 ELSE()
@@ -971,7 +971,7 @@ ELSE()
 ENDIF()
 
 # openddlparser
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   hunter_add_package(openddlparser)
   find_package(openddlparser CONFIG REQUIRED)
 ELSE()
@@ -994,7 +994,7 @@ ELSE()
 ENDIF()
 
 # Open3DGC
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   # Nothing to do, not available in Hunter yet.
 ELSE()
   SET ( open3dgc_SRCS
@@ -1035,7 +1035,7 @@ ENDIF()
 # RT-extensions is used in "contrib/Open3DGC/o3dgcTimer.h" for collecting statistics. Pointed file
 # has implementation for different platforms: WIN32, __MACH__ and other ("else" block).
 FIND_PACKAGE(RT QUIET)
-IF (NOT HUNTER_ENABLED AND (RT_FOUND OR MSVC))
+IF (NOT ASSIMP_HUNTER_ENABLED AND (RT_FOUND OR MSVC))
   SET( ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC 1 )
   ADD_DEFINITIONS( -DASSIMP_IMPORTER_GLTF_USE_OPEN3DGC=1 )
 ELSE ()
@@ -1045,7 +1045,7 @@ ELSE ()
 ENDIF ()
 
 # RapidJSON
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   hunter_add_package(RapidJSON)
   find_package(RapidJSON CONFIG REQUIRED)
 ELSE()
@@ -1068,7 +1068,7 @@ if ( MSVC )
   ADD_DEFINITIONS( -D_CRT_SECURE_NO_WARNINGS )
 endif ()
 
-IF(NOT HUNTER_ENABLED)
+IF(NOT ASSIMP_HUNTER_ENABLED)
   if (UNZIP_FOUND)
     SET (unzip_compile_SRCS "")
   else ()
@@ -1118,7 +1118,7 @@ SET( assimp_src
 )
 ADD_DEFINITIONS( -DOPENDDLPARSER_BUILD )
 
-IF(NOT HUNTER_ENABLED)
+IF(NOT ASSIMP_HUNTER_ENABLED)
   INCLUDE_DIRECTORIES(
       ${IRRXML_INCLUDE_DIR}
       ../contrib/openddlparser/include
@@ -1139,7 +1139,7 @@ TARGET_INCLUDE_DIRECTORIES ( assimp PUBLIC
   $<INSTALL_INTERFACE:include>
 )
 
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   TARGET_LINK_LIBRARIES(assimp
       PUBLIC
       polyclipping::polyclipping
@@ -1212,7 +1212,7 @@ SET_TARGET_PROPERTIES( assimp PROPERTIES
 )
 
 if (APPLE)
-  if (BUILD_FRAMEWORK)
+  if (ASSIMP_BUILD_FRAMEWORK)
     SET_TARGET_PROPERTIES( assimp PROPERTIES
       FRAMEWORK TRUE
       FRAMEWORK_VERSION C
@@ -1232,7 +1232,7 @@ ENDIF()
 
 # Build against external unzip, or add ../contrib/unzip so
 # assimp can #include "unzip.h"
-IF(NOT HUNTER_ENABLED)
+IF(NOT ASSIMP_HUNTER_ENABLED)
   if (UNZIP_FOUND)
     INCLUDE_DIRECTORIES(${UNZIP_INCLUDE_DIRS})
     TARGET_LINK_LIBRARIES(assimp ${UNZIP_LIBRARIES})
@@ -1246,7 +1246,7 @@ IF (RT_FOUND AND ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC)
   TARGET_LINK_LIBRARIES(assimp ${RT_LIBRARY})
 ENDIF ()
 
-IF(HUNTER_ENABLED)
+IF(ASSIMP_HUNTER_ENABLED)
   INSTALL( TARGETS assimp
     EXPORT "${TARGETS_EXPORT_NAME}"
     LIBRARY DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
diff --git a/code/FBX/FBXConverter.cpp b/code/FBX/FBXConverter.cpp
index 37d828c82..e7ef8fa61 100644
--- a/code/FBX/FBXConverter.cpp
+++ b/code/FBX/FBXConverter.cpp
@@ -856,13 +856,14 @@ bool FBXConverter::GenerateTransformationNodeChain(const Model &model, const std
 
     // name passed to the method is already unique
     nd->mName.Set(name);
-
-    for (const auto &transform : chain) {
-        nd->mTransformation = nd->mTransformation * transform;
+    // for (const auto &transform : chain) {
+    // skip inverse chain for no preservePivots
+    for (unsigned int i = TransformationComp_Translation; i < TransformationComp_MAXIMUM; i++) {
+      nd->mTransformation = nd->mTransformation * chain[i];
     }
     return false;
 }
-
+  
 void FBXConverter::SetupNodeMetadata(const Model &model, aiNode &nd) {
     const PropertyTable &props = model.Props();
     DirectPropertyMap unparsedProperties = props.GetUnparsedProperties();
diff --git a/code/glTF2/glTF2Importer.cpp b/code/glTF2/glTF2Importer.cpp
index e05c97264..caff630dc 100644
--- a/code/glTF2/glTF2Importer.cpp
+++ b/code/glTF2/glTF2Importer.cpp
@@ -952,8 +952,8 @@ aiNode *ImportNode(aiScene *pScene, glTF2::Asset &r, std::vector<unsigned int> &
 
 void glTF2Importer::ImportNodes(glTF2::Asset &r) {
 	if (!r.scene) {
-        return;
-    }
+		throw DeadlyImportError("GLTF: No scene");
+	}
 
 	std::vector<Ref<Node>> rootNodes = r.scene->nodes;
 
@@ -970,6 +970,8 @@ void glTF2Importer::ImportNodes(glTF2::Asset &r) {
 			root->mChildren[root->mNumChildren++] = node;
 		}
 		mScene->mRootNode = root;
+	} else {
+		mScene->mRootNode = new aiNode("ROOT");
 	}
 }
 
diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
index 8394ad703..f1d023bec 100644
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@@ -1,4 +1,4 @@
 # Compile internal irrXML only if system is not requested
-if( NOT SYSTEM_IRRXML )
+if( NOT ASSIMP_SYSTEM_IRRXML )
     add_subdirectory(irrXML)
 endif()
diff --git a/test/models/glTF2/TestNoRootNode/NoScene.gltf b/test/models/glTF2/TestNoRootNode/NoScene.gltf
new file mode 100644
index 000000000..6cad71ed4
--- /dev/null
+++ b/test/models/glTF2/TestNoRootNode/NoScene.gltf
@@ -0,0 +1,6 @@
+{
+    "asset": {
+        "version": "2.0"
+    },
+    "scene": 0
+}
diff --git a/test/models/glTF2/TestNoRootNode/SceneWithoutNodes.gltf b/test/models/glTF2/TestNoRootNode/SceneWithoutNodes.gltf
new file mode 100644
index 000000000..d426ca569
--- /dev/null
+++ b/test/models/glTF2/TestNoRootNode/SceneWithoutNodes.gltf
@@ -0,0 +1,10 @@
+{
+    "asset": {
+        "version": "2.0"
+    },
+    "scene": 0,
+    "scenes": [
+        {
+        }
+    ]
+}
diff --git a/test/unit/utglTF2ImportExport.cpp b/test/unit/utglTF2ImportExport.cpp
index 9372cd53c..23901b9b2 100644
--- a/test/unit/utglTF2ImportExport.cpp
+++ b/test/unit/utglTF2ImportExport.cpp
@@ -490,3 +490,16 @@ TEST_F(utglTF2ImportExport, texcoords) {
     EXPECT_EQ(aiGetMaterialInteger(material, AI_MATKEY_GLTF_TEXTURE_TEXCOORD(aiTextureType_UNKNOWN, 0), &uvIndex), aiReturn_SUCCESS);
     EXPECT_EQ(uvIndex, 1);
 }
+
+TEST_F(utglTF2ImportExport, norootnode_noscene) {
+    Assimp::Importer importer;
+    const aiScene* scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF2/TestNoRootNode/NoScene.gltf", aiProcess_ValidateDataStructure);
+    ASSERT_EQ(scene, nullptr);
+}
+
+TEST_F(utglTF2ImportExport, norootnode_scenewithoutnodes) {
+    Assimp::Importer importer;
+    const aiScene* scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF2/TestNoRootNode/SceneWithoutNodes.gltf", aiProcess_ValidateDataStructure);
+    ASSERT_NE(scene, nullptr);
+    ASSERT_NE(scene->mRootNode, nullptr);
+}