Hello, We're investigating an upgrade from 2019 LTS to 2020.2 in our project and even though the Editor improvements are cool, we unfortunately haven't been able to build the project on 2020.2b11. We have a 100% crash when trying to build the asset bundles through our editor tools with a stacktrace as follow: Code (CSharp): Stack Trace of Crashed Thread 54496: 0x00007FF7755D78DA (Unity) winutils::CrashHandler::DefaultSignalHandler 0x00007FF775416657 (Unity) HandleSignal 0x00007FF77893A17A (Unity) seh_filter_exe 0x00007FF778CF5329 (Unity) `__scrt_common_main_seh'::`1'::filt$0 0x00007FF778907E48 (Unity) _C_specific_handler 0x00007FFC3BEE121F (ntdll) _chkstk 0x00007FFC3BEAA259 (ntdll) RtlRaiseException 0x00007FFC3BEDFE8E (ntdll) KiUserExceptionDispatcher 0x00007FF777B3E580 (Unity) Mesh::Transfer<StreamedBinaryWrite> 0x00007FF775549AB3 (Unity) SerializedFile::WriteObject 0x00007FF775511C13 (Unity) PersistentManager::WriteFile 0x00007FF775513629 (Unity) PersistentManager::WriteFile 0x00007FF7763002A4 (Unity) WriteSharedAssetFile 0x00007FF7762DBC8B (Unity) CompileSharedAssetsFile 0x00007FF777E8AD61 (Unity) BuildSharedAssetsFile 0x00007FF777E8626F (Unity) BuildPlayerData 0x00007FF777E8E951 (Unity) DoBuildPlayer_Build 0x00007FF777E8D5B7 (Unity) DoBuildPlayer 0x00007FF776287CC4 (Unity) BuildStreamedSceneBundle 0x00007FF776285591 (Unity) BuildAssetBundlesInternal 0x00007FF77628320F (Unity) BuildAssetBundles 0x00007FF77735EF51 (Unity) BuildPipeline::BuildAssetBundlesWithInfoInternal 0x00007FF7771F88BF (Unity) BuildPipeline_CUSTOM_BuildAssetBundlesWithInfoInternal 0x0000023150F8F2D7 (UnityEditor.CoreModule) UnityEditor.BuildPipeline.BuildAssetBundlesWithInfoInternal() 0x0000023150F8EF8B (UnityEditor.CoreModule) UnityEditor.BuildPipeline.BuildAssetBundles() 0x0000023150F8EE93 (UnityEditor.CoreModule) UnityEditor.BuildPipeline.BuildAssetBundles() I have also reported the crash in fogbugz case #1292739 with more information there. Is this a known issue or is there a workaround to that crash as of now? I should note, since this crash is related to writing files, that our project is also on Perforce (I tried setting the project to work offline but nothing changed). Thanks, Christopher.