I'm not sure if this is really caused by your mod but a search for "btnCreate" (which is part of the error message) brought me here. Sorry if this is unrelated. KSP version: 0.90 Mod version: 0.5 RC3 (fresh install via CKAN) Afaik it crashed the game while switching from the VAB editor to the launch pad. Last few lines in output_log.txt: ``` NullReferenceException: Object reference not set to an instance of an object at btnCreate.OnDestroy () [0x00000] in <filename unknown>:0 (Filename: Line: -1) UnloadTime: 107.869690 ms Crash!!! ERROR: Error while initializing dbghelp.dll, GetLastError: 'The operation completed successfully.' (Address: 00000000) ========== OUTPUTING STACK TRACE ================== ERROR: Error while initializing dbghelp.dll, GetLastError: 'The operation completed successfully.' (Address: 00000000) ========== END OF STACKTRACE =========== **** Crash! **** ``` First few lines in error.log: ``` Unity Player [version: Unity 4.5.5f1_7684ad0c5a44] mono.dll caused an Access Violation (0xc0000005) in module mono.dll at 0023:10107170. Error occurred at 2015-01-10_072956. C:\Steam\SteamApps\common\Kerbal Space Program\KSP.exe, run by Flo. 84% memory in use. 0 MB physical memory [970 MB free]. 0 MB paging file [0 MB free]. 0 MB user address space [108 MB free]. Write to location 00000000 caused an access violation. ``` Full files: [output_log.txt](https://gist.github.com/nairol/babc9228b83d3266e4d1#file-output_log-txt) [error.log](https://gist.github.com/nairol/babc9228b83d3266e4d1#file-error-log) Not that much information unfortunately... Thanks for your mod!