[CrashReport] UE4Editor_CoreUObject!FLinkerSave::FLinkerSave() [linkersave.cpp:31]

This is a longstanding and common crash that has occurred since at least the 4.11 release. The error appears to occur while trying to access a .tmp file.

User Descriptions

• I left unreal unattended for an hour or so and it crashed
• Imported an FBX file from 3ds max and put the FBX file in the scene. It crashed about three minutes later
• I was simply importing a NASA file for the MMSEV a space rover obj file.
• I'm also running Maya 2015, as I'm having to retry a particular FBX import a couple of times to try to get the textures transfer. I also have a couple of reasonably high poly meshes in my level, but nothing too much. I have an ocean surface running. This is the second crash today; I should probably just close Maya.

Source Context

 9       /** A mapping of package name to generated script SHA keys */
   10       TMap<FString, TArray<uint8> > FLinkerSave::PackagesToScriptSHAMap;
   11       
   12       FLinkerSave::FLinkerSave(UPackage* InParent, const TCHAR* InFilename, bool bForceByteSwapping, bool bInSaveUnversioned)
   13       :	FLinker(ELinkerType::Save, InParent, InFilename )
   14       ,	Saver(nullptr)
   15       {
   16       	if (FPlatformProperties::HasEditorOnlyData())
   17       	{
   18       		// Create file saver.
   19       		Saver = IFileManager::Get().CreateFileWriter( InFilename, 0 );
   20       		if( !Saver )
   21       		{
   22 ***** 			UE_LOG(LogLinker, Fatal, TEXT("%s"), *FString::Printf( TEXT("Error opening file '%s'."), InFilename ) );
   23       		}
   24       
   25       		UPackage* Package = dynamic_cast<UPackage*>(LinkerRoot);

• Try to save something in the editor with a path that's close to the maximum length on Windows (260 characters). Example from one crash report: love-lips-sponge-face-girl-girl-gifts-heart-heart-heart-valentine-holiday-textures-vector-pictures-wallpapers-desktop-wallpaper-best-wallpapers-desktop-wallpaper-shirokoformat_Auto.uasset (don't ask me)
• While saving, the editor appends a 32 character GUID to the asset name and stores it in the project's saved folder. Editor crashes if the total length of that path is > 260 characters.

[UE-23848] Bug Status

Fix UE-51650

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