Project Error on Startup after last save

I build a map under a new project in unreal4, now anytime I launch it gives me an error.
project error to fix.jpg

Any ideas?

Tried editing INI but no dice. 4.5 version of engine.

You get the same error after you changed the name in the .ini?
As a temporary solution you could just create a new project + copy all the needed files into the new folder :slight_smile:

It does this arbitrarily. Sometimes it works sometimes it doesn’t. This time no INI changes whatsoever. The project worked literally yesterday, now after an unreal launcher update it will not.