Failed to open descriptor file - packaged win32 .exe error

Hi everyone,

I’m having a troublesome issue while trying to package my dissertation project. I have set the packaging settings as shown in the below image, but receive this message when attempting to run the packaged .exe:

“Failed to open descriptor file

Does anybody know what causes this issue and how to fix it?

Appreciate your help!

P.S. not sure if it’s important, I have windows set as the supported platforms, with console and PC as the targeted platforms.

Bump with report:


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

Assertion failed: GConfig->GetInt( TEXT(‘TextureStreaming’), TEXT(‘MemoryMargin’), MemoryMargin, GEngineIni ) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\Eng

KERNELBASE + 37901 bytes
UE4Game!FOutputDeviceWindowsError::Serialize() + 268 bytes
UE4Game!FOutputDevice::Logf__VA() + 248 bytes
UE4Game!FDebug::AssertFailed() + 1257 bytes
UE4Game!FStreamingManagerTexture::FStreamingManagerTexture() + 570 bytes
UE4Game!FStreamingManagerCollection::AddOrRemoveTextureStreamingManagerIfNeeded() + 196 bytes
UE4Game!FStreamingManagerCollection::FStreamingManagerCollection() + 174 bytes
UE4Game!IStreamingManager::Get() + 37 bytes
UE4Game!FEngineLoop::PreInit() + 6413 bytes
UE4Game!GuardedMain() + 234 bytes
UE4Game!GuardedMainWrapper() + 26 bytes
UE4Game!WinMain() + 249 bytes
UE4Game!__tmainCRTStartup() + 329 bytes

Hey CaptainFacepalm,

Thank you for taking the time to report this issue, and we appreciate your patience while awaiting a response. In order to assist you in an effective manner, we would like to see if you are still experiencing the issue you are reporting in engine versions 4.8.3 and/or 4.9.2?

If so, would you mind providing some simple steps, screenshots, or any other relevant pieces of information to help us reproduce the issue on our end?

If you are experiencing a crash or a major bug, we ask that you take a look at our ‘How to Report a Bug’ sticky post on our Forums. It will give you all the correct instructions on how to make an official bug report on the AnswerHub, including the information needed in order to move forward with the reporting/troubleshooting process.

Please do not hesitate to ask questions or post any new comments in regards to the issue.

Thank you,