The message "can't commit changes to file "sys.ew" appears and I can't play.
How to get GIB working again
It seems like there may be an issue with the file "sys.ew" that GIB is trying to write changes to. Try making sure you have the necessary permissions to write to that file and check if there are any other programs that may be using it. You can also try reinstalling GIB to see if that fixes the issue.
