Please follow the instructions <A HREF="https://go.beamng.com/unusualProccessExit/0xE0000004_-_BNGBase::EXIT_ERR_USER_PATH_UNWRITABLE">here to fix</a> the problem.
Launches the application with a temporary Userfolder. Use this mode for diagnostic purposes if you encounter any issues. If it runs normally in Safe Mode, one of the installed mods may be the cause of the issue. WARNING: Changes made while in Safe Mode will not be saved after the exiting