Issue Description
On rare occasions, you'll encounter a message that says, "an unexpected error has occurred while trying to save the report" when closing a report while two or more reports are open at once.
Instructions
This is usually caused by a process getting hung up in the background of your computer.
Close out of TOTAL completely.
Open the report you were trying to close, save it, and close it again.
Now you can open, save, and close your reports normally.