Editor crashes when trying to load a certain level

Basically, I have a level in a game which crashes whenever I try to load it. It goes up to about 30-40% in loading and then the whole editor crashes. I then tried to make it the default level when you open the game and now I cannot even access the game at all. It loads up to about 93% and then just crashes with no error.

I tried to make it a shortcut on my desktop but it still didn’t open. I got this log though, i think it’s from the crash.

[2016.08.11-18.15.42:946][ 0]LogWindows:Error: === Critical error: ===
Fatal error: [File:D:\Build++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\Foliage\Private\FoliageInstanceBase.cpp] [Line: 90]
Instance base cache - integrity verification(3): Counter: 29 Size: 25, InvSize: 22 (L:1 S:0 T:0)

[2016.08.11-18.15.42:989][ 0]LogExit: Executing StaticShutdownAfterError
[2016.08.11-18.15.42:992][ 0]LogWindows: FPlatformMisc::RequestExit(1)
[2016.08.11-18.15.42:992][ 0]Log file closed, 08/11/16 19:15:42

Hello,

Could you please cause the crash to occur again and provide the logs from your project’s Saved->Logs folder?

Go into your project’s Content folder and move your .umap file to the desktop. You should be able to open the project then. Also, look in the Saved->Backups folder and see if there is a backup of your .umap file. If so, move this to your Content folder and try to open that version of the map.

Hello,

After seeing the error, this appears to be: Unreal Engine Issues and Bug Tracker (UE-32774)

Try opening your project in the 4.13 preview, as the crash should be fixed there.

Let me know if that helps.

Have a great day

I tried to do that, but it said I needed to get the GameAnalytics plugin in order to open it, and that’s not compatible for 4.13, so I’m basically able to do nothing. Assuming I can only access my game in 4.13, how long do I need to wait until 4.13 is released?

There is currently no set timeline for when 4.13 will be fully released. However, in the meantime, if you are using a source build, there is a link to the fix commit on that issues page that I provided, and you can merge this into your engine to get the necessary fix.

Alright, I had a look at the page, but how do I use the commit fix? I tried clicking the release commit link but it says page not found. Thanks for the help!

Hi, how do I merge the fix commit to my version of UE4? Thanks.

You’ll need to be using a build of UE4 from Github. The binary build from the launcher does not allow you to edit the source code.

The reason the commit link was not working for you is because you most likely either haven’t logged into your linked Github account, or you have never linked your Unreal Engine and Github accounts. Here’s the wiki for how to do this: A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums