pedrovilar, what do you mean by saying the project file was "destroyed"?
From what I assume, you might have used an object that has some diacritic mark (ą, ę, é, ñ, ö or other) in its name... Or named the project file that way...
This is the only object / tgo file instance where you can indeed call the project being "destroyed". TG cannot handle special letters and signs in file names. If I were you, I'd make sure if this is not the case by any chance.