Ah, I was not running it on the main computer, but on one wired to the network. Your suggestion worked! Audit Log Report runs without a problem on the main computer. Thanks!
Is optimizing the database something that can be done during the workday while people are opening charts and saving changes (i.e. making changes to the database)? I've always been hesitant to run the optimizer during office hours.
And Bert, there doesn't appear to be a way to click 'okay' on the error message and continue, the error message takes precedence over all of the other AC windows.