[ZeLpH_MyStiK]

That's because the auto-updater downloads a new version of Graal4.exe or whatever is needed, shuts down Graal, and replaces the files. It is unable to delete the files if it's still in use while it attempts to replace sometimes, especially if your computer is laggy. I've also noticed that when you're using v2 at the same time as it is attempting to update, it is unable to replace the files.