New version 3.303 as of Aug. 8th at 6:20am EST stops working during the "clean" operation.
Here is the error message that occurs during the broswer cleanup. It appears to be happening right before Firefox cleanup.
[Window Title]
Aut2Exe
[Main Instruction]
Aut2Exe has stopped working
[Content]
A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available.
[Close program]