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Project Crashing on Open

Hi all, I've been working on a level for an assignment, with issues until today, where I tried to play the level (build using third person BP) and the editor crashed. The project now crashes every time I try to load it... I've sunk weeks into this, and would love to know if there are any fixes available...

The level is a simple outdoor map with all meshes taken from free asset packs on the marketplace (mostly infinity blade meshes and foliage from the open world demo). I've added no custom blueprints or code, I haven't even edited any textures.

Unbelievably disappointed right now... any help would be great.

EDIT: I believe the fatal error is

Fatal error: [File:D:\Build\++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\Foliage\Private\FoliageInstanceBase.cpp] [Line: 90] &nl;Instance base cache - integrity verification(3): Counter: 50 Size: 46, InvSize: 39 (L:1 S:0 T:0)&nl;

Looks like a failure of the 12.5 engine, but for the assignment I am forced to use this engine version. Any advice on getting the project to run? At all? Can I remove the foliage entirely? I just need it to open, losing a few ferns is no big deal at this point!

Attached is the .log file from the crash report. link text

Product Version: UE 4.12
pichu_v04.log (13.5 kB)
more ▼

asked Dec 22 '16 at 02:53 PM in Using UE4

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avatar image jimd667 Dec 22 '16 at 03:34 PM


First I would recommend you create backups of your project on a separate device every time you work in the engine. That way you have several copies just in case something like this happens.

If the project was working not too long ago then it was probably something recent that you added that is causing the crash. Try removing the Intermediate and Saved folder under your project folder and re-open the game.

avatar image DukesOfDevon Dec 22 '16 at 04:11 PM

Many thanks for the prompt reply, I will definitely be backing up daily from now on...

I removed the aforementioned folders and the same thing occurs, this appears to be a foliageinstancebase.cpp error... I know you've fixed that in 4.13.... but I am really hoping there's a fix for this version!

I appreciate the help.

avatar image DukesOfDevon Dec 22 '16 at 06:15 PM

CA3515C24D9878E866BCBB8BCDD9387E 32d97d0980df4e6d82a318856e5ff48c

Fatal error: [File:D:\Build\++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\Foliage\Private\FoliageInstanceBase.cpp] [Line: 90] &nl;Instance base cache - integrity verification(3): Counter: 50 Size: 46, InvSize: 39 (L:1 S:0 T:0)&nl; 0


There has to be some way of opening the map, any fix that can just get round the above?

avatar image jimd667 Dec 22 '16 at 04:28 PM

Yes, if removing the foliage asset manually from the content folder fixes the issues then by all means go right ahead. you can always recreate it later once the project is going again. hope this helps.

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