I came across an error while trying to make a backup, and after not too long was able to determine it was because of a symlink in my Script Add-Ins folder that pointed to a non-existent file (I had renamed the target).
I guess this might not truly be a bug since the error code is correct, but I think it would be helpful if it said which file(s) exactly were causing the problem. And for any other errors that might result from file errors.
The text of the error for anyone searching:
Backup failed.
Error code 2: The system cannot find the file specified.
