Crashing after converting to 4.12

Development Programming & Scripting Blueprint
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1

Hey guys,

We have been having a problem with one of our project once its converted to 4.12, the project works fine in 4.10 and 4.11 with no modifications. But when we convert it to 4.12 the editor crashes on lunch, this also happens when we migrate the files to an existing 4.12 project. This is a blueprint project.

The critical problem in the crash log is this:

[2016.06.21-13.55.05:347][626]LogWindows:Error: === Critical error: ===
Assertion failed: !HasAnyFlags(RF_NeedLoad|RF_NeedPostLoad) [File:D:\Build++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectLinker.cpp] [Line: 102]
Detaching from existing linker for D:/OneDrive//Products/UE4/RTS_Building_Template_X 4.12/Content/RTS_Builder_Template/Blueprints/BuildingActors/BP_MasterBuilding2.uasset while object ObjectProperty /Engine/Transient.TRASHCLASS_BP_MasterBuilding2_34:ObjectProperty_108 needs loaded

Any help would be appropriated.

EDIT

Work around here: Editor Crash on Startup (Asseration Failed:UOBJECT) - Blueprint - Epic Developer Community Forums

Thanks

2

Same issue hereanswers.unrealengine.com/questions/439480/412-project-does-not-open-in-4123.html

3

And here as well : Editor Crash on Startup (Asseration Failed:UOBJECT) - Blueprint - Unreal Engine Forums

Wish they would at least recognize the problem… It’s been weeks now…

To Repo this issue : Check Marketplace asset GenericShooter, it is affected by the same bug.

4

Hi,

As I stated in 's post, I have entered a bug report, UE-32356, to be assessed by the development staff. If you need additional information, please post on 's answerhub link so we can keep the information in one location.

5

Hey guys,

For reference a work around has been found here: