diff --git a/code/Common/ScenePreprocessor.cpp b/code/Common/ScenePreprocessor.cpp
index 2b73d9452..113ca7ff1 100644
--- a/code/Common/ScenePreprocessor.cpp
+++ b/code/Common/ScenePreprocessor.cpp
@@ -4,7 +4,6 @@ Open Asset Import Library (assimp)
 
 Copyright (c) 2006-2020, assimp team
 
-
 All rights reserved.
 
 Redistribution and use of this software in source and binary forms,
@@ -52,8 +51,12 @@ void ScenePreprocessor::ProcessScene() {
     ai_assert(scene != nullptr);
 
     // Process all meshes
-    for (unsigned int i = 0; i < scene->mNumMeshes; ++i)
+    for (unsigned int i = 0; i < scene->mNumMeshes; ++i) {
+        if (nullptr == scene->mMeshes[i]) {
+            continue;
+        }
         ProcessMesh(scene->mMeshes[i]);
+    }
 
     // - nothing to do for nodes for the moment
     // - nothing to do for textures for the moment
@@ -61,8 +64,12 @@ void ScenePreprocessor::ProcessScene() {
     // - nothing to do for cameras for the moment
 
     // Process all animations
-    for (unsigned int i = 0; i < scene->mNumAnimations; ++i)
+    for (unsigned int i = 0; i < scene->mNumAnimations; ++i) {
+        if (nullptr == scene->mAnimations[i]) {
+            continue;
+        }
         ProcessAnimation(scene->mAnimations[i]);
+    }
 
     // Generate a default material if none was specified
     if (!scene->mNumMaterials && scene->mNumMeshes) {
diff --git a/contrib/zlib/CMakeLists.txt b/contrib/zlib/CMakeLists.txt
index 0e8a4b1e1..469151ff6 100644
--- a/contrib/zlib/CMakeLists.txt
+++ b/contrib/zlib/CMakeLists.txt
@@ -198,11 +198,9 @@ endif(MINGW)
 
 add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
 
-IF(WIN32)
-    INSTALL( TARGETS zlibstatic
-             EXPORT "${TARGETS_EXPORT_NAME}"
-             LIBRARY DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
-             ARCHIVE DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
-             RUNTIME DESTINATION ${ASSIMP_BIN_INSTALL_DIR}
-             COMPONENT ${LIBASSIMP_COMPONENT})
-ENDIF()
+INSTALL( TARGETS zlibstatic
+     EXPORT "${TARGETS_EXPORT_NAME}"
+     LIBRARY DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
+     ARCHIVE DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
+     RUNTIME DESTINATION ${ASSIMP_BIN_INSTALL_DIR}
+     COMPONENT ${LIBASSIMP_COMPONENT})
diff --git a/include/assimp/material.h b/include/assimp/material.h
index 4daf0cdeb..13529f172 100644
--- a/include/assimp/material.h
+++ b/include/assimp/material.h
@@ -735,9 +735,9 @@ public:
      *    #GetTextureCount() can be used to determine the number of textures
      *    per texture type.
      *  @param path Receives the path to the texture.
-     *    If the texture is embedded, receives a '*' followed by the id of
-     *    the texture (for the textures stored in the corresponding scene) which
-     *    can be converted to an int using a function like atoi.
+     *    Use aiScene::GetEmbeddedTexture() method to determine if returned path
+     *    is an image file to be opened or a string key of embedded texture stored in the corresponding scene
+     *    (could be a '*' followed by the id of the texture in case of no name)
      *    NULL is a valid value.
      *  @param mapping The texture mapping.
      *    NULL is allowed as value.
diff --git a/include/assimp/types.h b/include/assimp/types.h
index 74763d496..99527dcc2 100644
--- a/include/assimp/types.h
+++ b/include/assimp/types.h
@@ -305,9 +305,9 @@ struct aiString {
 
     /** Copy a const char* to the aiString */
     void Set(const char *sz) {
-        const ai_int32 len = (ai_uint32)::strlen(sz);
+        ai_int32 len = (ai_uint32)::strlen(sz);
         if (len > (ai_int32)MAXLEN - 1) {
-            return;
+            len = (ai_int32) MAXLEN - 1;
         }
         length = len;
         memcpy(data, sz, len);
@@ -321,7 +321,10 @@ struct aiString {
         }
 
         length = rOther.length;
-        ;
+        if (length >(MAXLEN - 1)) {
+            length = (ai_int32) MAXLEN - 1;
+        }
+
         memcpy(data, rOther.data, length);
         data[length] = '\0';
         return *this;
diff --git a/include/assimp/vector3.inl b/include/assimp/vector3.inl
index 2765115a2..1d024e03f 100644
--- a/include/assimp/vector3.inl
+++ b/include/assimp/vector3.inl
@@ -5,8 +5,6 @@ Open Asset Import Library (assimp)
 
 Copyright (c) 2006-2020, assimp team
 
-
-
 All rights reserved.
 
 Redistribution and use of this software in source and binary forms,
@@ -154,6 +152,9 @@ const aiVector3t<TReal>& aiVector3t<TReal>::operator *= (TReal f) {
 template <typename TReal>
 AI_FORCE_INLINE
 const aiVector3t<TReal>& aiVector3t<TReal>::operator /= (TReal f) {
+    if ( f == static_cast<TReal>(0.0)) {
+        return *this;
+    }
     const TReal invF = (TReal) 1.0 / f;
     x *= invF;
     y *= invF;