IOS Export as Ad Hoc Error: Failed to find or create asset signatures

Since I have updated Xcode to 6.0.1, I cannot export the application as Ad Hoc. I tried many solutions but they were not helpful. I have also reassigned my certificate and provisioning profile. But that was without success. I have no idea what to do ... Maybe someone had the same thing that I have now?

Error Details : Profile Info: Build Settings: Postscript This is not a duplicate topic. I've tried all the solutions from questions like this ... They all don't work for me ...