Engine crash on start - Assertion failed: FCString::Strlen

Hi,
My engine crashes on startup ever since I updated to the latest revision of our project using SVN.

Any idea on how I can fix it and what might be causing it?

I get the following error:

!Id:f6fbd47c5adf46a1f798116965ae914f

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

Assertion failed: FCString::Strlen(InName)<=NAME_SIZE [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.2\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp] [Line: 504]

KERNELBASE + 23544 bytes

UE4Editor_Core + 2998748 bytes

UE4Editor_Core + 1620298 bytes

UE4Editor_Core + 1561376 bytes

UE4Editor_Core + 2597077 bytes

UE4Editor_Core + 2517697 bytes

UE4Editor_Core + 1434112 bytes

UE4Editor_Core + 1441332 bytes

UE4Editor_Core + 1814007 bytes

UE4Editor_Core + 1401751 bytes

UE4Editor_Core + 1355964 bytes

UE4Editor_Core + 1405541 bytes

UE4Editor_Core + 1390919 bytes

UE4Editor!FEngineLoop::AppInit() + 951 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\launchengineloop.cpp:2320]

UE4Editor!FEngineLoop::PreInit() + 7576 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\launchengineloop.cpp:991]

UE4Editor!GuardedMain() + 236 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\launch.cpp:111]

UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]

UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:207]

UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

Thanks in advance!

-Tom

I don’t know why but deleting config files and replacing them with new ones solved the problem.