4.10.4 Can't load project anymore, Unknown exception - code 00000001 (first/second chance not available)

Development Platform & Builds
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1

When the project loads up, then this error comes up and the Ued quits with the error below.
I got the latest 4.10.4 version from the launcher 25th February 2016) and win 7.
I also tried to delete the derived data caches, same problem afterward.
What ways do i have to track down the problem, as I cant work on on the project right now? Other projects work with 4.10.4.

"Assertion failed: Index.IsImport() && ImportMap.IsValidIndex(Index.ToImport()) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.10\Engine\Source\Runtime\CoreUObject\Public\UObject\Linker.h] [Line:

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\misc\outputdevice.cpp:374]
UE4Editor_AssetRegistry!FPackageDependencyData::GetImportPackageName() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\assetregistry\private\packagedependencydata.cpp:10]
UE4Editor_AssetRegistry!FAssetRegistry::DependencyDataGathered() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\assetregistry\private\assetregistry.cpp:1797]
UE4Editor_AssetRegistry!FAssetRegistry::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\assetregistry\private\assetregistry.cpp:1317]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\unrealed\private\editorengine.cpp:1118]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\unrealed\private\unrealedengine.cpp:361]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launchengineloop.cpp:2427]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

2

Hi Vollgaser,

Troubleshooting Steps you can start with:

  1. Verify your latest version of UE4.10 (In the Library, right-click on down arrow and select “Verify”)
  2. Download and install Preview 4.11. -Then open a copy of your project in this version
  3. Duplicate the folder. Move one version to desktop for safe back up. Then go to the Contents folder delete the latest created assets a few at a time and then right click on the project file and choose Open in 4.10. Repeat this process until project opens, if at all, or until all custom assets have been removed.

If none of those work, please provide as many of the following as possible:

  1. Your dxdiag (Windows Start Button>(search “dxdiag”)>Launch dxdiag>select “Save all information”>attach text file to your post.)
  2. If the Crash Reporter window is present when the crash occurs, select “Copy Callstack to the Clipboard,” and paste that information in a document and add to this post. Be sure to hit “Submit” on the Crash Reporter pop-up to send the Crash Report to Epic.
  3. “UE4.log” Located: Engine\Saved\Logs\
  4. “ProjectName.log” Located: ProjectName\Saved\Logs\

-Thanks,

.

3

Thanks, i found a solution, as the problems seems to be connected somehow with the asset update process: I started a new empty project and successivels copied over the folders from the old project’s content folderstructure. I expected to get the error again when the problem-causing folder is copied over. well, i copied everything over but no error came up. so i can work on in this new project. strange, but working at least. Thanks for youre help anyway!

4

Thanks for the update… your solution may help someone else with a similar issue down the road.