Do you have an action which does exafctly this, does the action name have a nonalphanumeric charatcer like colon or backslash in the name of the action?
Check your autorecover folder if any files are in there, and delete them.
Mac - /Users/(YOURNAME/Library/Application Support/Adobe/Adobe Photoshop CS6/AutoRecover/
What happens if you do a file revert after the action messes up your file?
Thanks for your response. If I revert the file it just starts over again. I can't see any actions with strange characters.
Should I delete all but the default actions?
I removed the actions and deleted the preferences file. I don't see an AutoRecover folder.
Fixed it. I Command+Option+Shift at startup to delete preferences and it seems to have fixed the issue!