Launching engine Problems

Hi, i have the following problem, if i build a game in xcode and get errors, or the unreal engine shut with error, cant start unreal engine again.
the launcher says launching for a while and then it stops.
Also when this problem happens, my xcode project does not build succesfully even with no errors at all.
i have found a solution, if i choose verify, it downloads a 150mb file, and then works, but i cant do this thing every time it has a problem.
looking forward to a most permanent solution.

Hello warement,

What type of errors are you getting? Also, are you using the Clean option in XCode to clean your project? There is currently a bug in our system where a certain from the editor’s installation will be deleted along with the binaries that are suppose to deleted when using the Clean option.

Yes, i think most of the times it was after i cleaned the project.
The errors i was getting was about exit code 5. when i tried to compile after the clean has been made.

That would be the cause. I would suggest avoiding the clean option for now as it is causing this problem. We’re currently working on fixing the issue. If you do need to use the clean option however, you’ll need to verify after to recover the lost file as you were before.