AGAIN ,URGENT help please, project craches on start up, have to deliver tomorrow

Hey mageena,

Please remember to perform a search in our documentation for your error message before posting a new thread.

I’ve discovered a few threads where users had the same error and were able to resolve it.

Have a look and give those suggestions a try:

Have a great day

Somewhere in your project you’re making a call to a path that is invalid:

LongPackageNameToFilename failed to
convert ‘None’. Path does not map to
any roots.

I’d recommend starting with deleting your project’s Saved and Intermediate folders (make a copy of the project first with these folders in case you need to access backups stored there).

Also, try deleting the asset that caused the crash from your project’s Content folder to see if you are able to open the project without it. If you are, then you can assume the issue lies somewhere within that asset.

Those are a couple of debugging suggestions that you can start with.

No problem, glad that you were able to resolve the issue.

Have a great day

hi all again, I’m sending again, as it is very urgent. I HAVE TO DELIVER THE PROJECT TOMORROW. or im in big trouble

i was clicking the drop down menu in the Houdini asset to change materials from inside of it. then crashed and never open again


Fatal error: [File:D:\Build++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\Misc\PackageName.cpp] [Line: 390]
LongPackageNameToFilename failed to convert ‘None’. Path does not map to any roots.

UE4Editor_Core!FDebug::AssertFailed() [d:\build++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
UE4Editor_CoreUObject!FPackageName::LongPackageNameToFilename() [d:\build++ue4+release-4.16+compile\sync\engine\source\runtime\coreuobject\private\misc\packagename.cpp:390]
UE4Editor_UnrealEd!PackageRestore::PromptToRestorePackages() [d:\build++ue4+release-4.16+compile\sync\engine\source\editor\unrealed\private\packagerestore.cpp:556]
UE4Editor_UnrealEd!FPackageAutoSaver::OfferToRestorePackages() [d:\build++ue4+release-4.16+compile\sync\engine\source\editor\unrealed\private\packageautosaver.cpp:295]
UE4Editor_UnrealEd!FUnrealEdMisc::OnInit() [d:\build++ue4+release-4.16+compile\sync\engine\source\editor\unrealed\private\unrealedmisc.cpp:300]
UE4Editor_UnrealEd!EditorInit() [d:\build++ue4+release-4.16+compile\sync\engine\source\editor\unrealed\private\unrealedglobals.cpp:97]
UE4Editor!GuardedMain() [d:\build++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\launch.cpp:150]
UE4Editor!GuardedMainWrapper() [d:\build++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build++ue4+release-4.16+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]

i’v alrady searching for 3 hours now , im new to unreal and i have to deliver my project today or tomorrow ,and then i have this big problem that i can’t handel .

i don’t know where i can find any codes to fix .as i alrady didn;t touch any codes and the project is working fine since more than a month .

please i need your help to guide me where to go to find the error to fix it . PLEASE .

I’ve deleted the two folders and all are fine now.

I really don’t know what to say,
I don’t know know how to thank you . I could easily loose my job because of that . losing two months work is not an easy thing

Many many thanks. REALY APPRECIATE IT .