Open BP = crash editor

Development Programming & Scripting
1

Hello, I have a blueprint, and a duplicated one. Duplicated one have different mesh component assigned. Both blueprints worked as intended in a map, until I’ve restarted the editor. Now, the duplicated blueprint crash the editor, and the map where that blueprint is crash the editor also with that log bellow. Any idea how to fix this please?

Unknown exception - code 00000001 (first/second chance not available)

Assertion failed: BlueprintObj->GeneratedClass [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.6\Engine\Source\Editor\UnrealEd\Private\Kismet2\Kismet2.cpp] [Line: 542] 
Invalid generated class for powerup2BP

KERNELBASE + 35740 bytes
UE4Editor_Core + 3092349 bytes
UE4Editor_Core + 1597688 bytes
UE4Editor_Core + 1479058 bytes
UE4Editor_UnrealEd + 10034613 bytes
UE4Editor_Engine + 1970481 bytes
UE4Editor_CoreUObject + 240879 bytes
UE4Editor_CoreUObject + 946774 bytes
UE4Editor_CoreUObject + 1054484 bytes
UE4Editor_CoreUObject + 944791 bytes
UE4Editor_CoreUObject + 947419 bytes
UE4Editor_CoreUObject + 1062891 bytes
UE4Editor_CoreUObject + 1460613 bytes
UE4Editor_CoreUObject + 1193007 bytes
UE4Editor_CoreUObject + 1189666 bytes
UE4Editor_CoreUObject + 1193874 bytes
UE4Editor_CoreUObject + 1189666 bytes
UE4Editor_CoreUObject + 1189156 bytes
UE4Editor_CoreUObject + 976397 bytes
UE4Editor_CoreUObject + 1185872 bytes
UE4Editor_CoreUObject + 951800 bytes
UE4Editor_CoreUObject + 1026078 bytes
UE4Editor_CoreUObject + 1460171 bytes
UE4Editor_CoreUObject + 1511826 bytes
UE4Editor_CoreUObject + 1580292 bytes
UE4Editor_ContentBrowser + 1469927 bytes
UE4Editor_ContentBrowser + 1842214 bytes
UE4Editor_ContentBrowser + 1342247 bytes
UE4Editor_ContentBrowser + 1386087 bytes
UE4Editor_ContentBrowser + 1891974 bytes
UE4Editor_ContentBrowser + 1336641 bytes
UE4Editor_ContentBrowser + 1382442 bytes
UE4Editor_ContentBrowser + 1371670 bytes
UE4Editor_ContentBrowser + 1977407 bytes
UE4Editor_ContentBrowser + 1892559 bytes
UE4Editor_Slate + 428894 bytes
UE4Editor_Slate + 157325 bytes
UE4Editor_Slate + 829529 bytes
UE4Editor_Slate + 768779 bytes
UE4Editor_Core + 2484316 bytes
UE4Editor_Core + 2400763 bytes
UE4Editor_Core + 2489275 bytes
UE4Editor_Core + 2387186 bytes
user32 + 9485 bytes
user32 + 9063 bytes
UE4Editor_Core + 2490486 bytes
UE4Editor!FEngineLoop::Tick() + 3434 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launchengineloop.cpp:2193]
UE4Editor!GuardedMain() + 479 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launch.cpp:131]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
2

Hi TDoro,

Go into your Projects content folder and remove the duplicated blueprint .uasset (don’t delete, just move it). Then try opening the project again.

:\Users\Yourname\Documents\Unreal Projects\YourProjectName\Content

If this doesn’t work or the issue pops up again after you recreated the asset; post your dxdiag, Log, and Dmp files. Also, post some screenshots showing that blueprints Event Graph and Components.

3

I’ve moved the duplicated blueprints to other folder inside “Content”, now map open without crashing editor, I do not have any reference to those blueprints in “Scene Outliner” also.

But if I still try to open one of those duplicated BP editor still crash.

Is duplicating a blueprint a problem ? Because the original blueprint works with out any problems?

4

No, duplicating a blueprint shouldn’t cause any sort of issues like this. It sounds like it may be corrupted though.

Instead of moving it to another folder, try moving it complete out of the project to your desktop or somewhere. Then open the project and create another version of the blueprint from the original asset.

5

Hi TDoro,

We haven’t heard back from you in a few days, so we are marking this post as resolved for tracking purposes. If you’re still experiencing this issue, please try the suggestion I provided above and post back here with your results.

Cheers,

TJ