Unreal Engine 4.7: Assertion failed: Det != 0.0f

Hello,

I try to port an existing game to 4.7 and get a crash in the editor as soon as I open a user interface. I think it might have to do something with zooming in or out. The error is:

2015.01.26-07.54.40:648][511]LogContentBrowser:Verbose: The content browser source was changed by the sources view to '/Game/MMO/Blueprints/UserInterface'
Assertion failed: Det != 0.0f [File:Runtime/Core/Public/Math/TransformCalculus2D.h] [Line: 446] 
[2015.01.26-07.55.24:699][666]LogMac:Error: appError called: Assertion failed: Assertion failed: Det != 0.0f [File:Runtime/Core/Public/Math/TransformCalculus2D.h] [Line: 446] 
[2015.01.26-07.55.24:701][666]LogCrashTracker: 
[2015.01.26-07.55.24:701][666]LogMac: === Critical error: ===
[2015.01.26-07.55.24:701][666]LogMac: Assertion failed: Assertion failed: Det != 0.0f [File:Runtime/Core/Public/Math/TransformCalculus2D.h] [Line: 446] 
[2015.01.26-07.55.24:702][666]LogExit: Executing StaticShutdownAfterError
[2015.01.26-07.55.24:710][666]LogMac: FPlatformMisc::RequestExit(1)

Does somebody have an idea what this could be? Opening the very same interface under 4.6.1 works.

Regards,

Heiko

Hi Bardioc,

Do you have any foliage in your project?

Hi Bardioc,

We have not heard from you in quite some time. I am marking this as answered for tracking purposes, if you are still experiencing this error, please comment with the requested information.