Evolution error "summary and folder mismatch even after a sync"

In my wife's profile on the desktop she said she was getting an error message sending and receiving messages so.... when doing a send/receive of mail I saw evolution giving an error message of "summary and folder mismatch even after a sync". It seemed to download mail ok, it was just nagging for some reason. I'm thinking it may be a bug, but there's a pretty quick and easy workaround. I found someone suggest deleting the following files .evolution/mail/local/*summary..... (look in /home/youruser/.evolution/mail/local and delete ALL files that end in summary.)

That solved the problem and didn't seem to introduce any other heartaches. (No messages were harmed in the workaround...) Evolution is, of course, a mail client that runs under linux. That may not prevent it from returning at some point, but after testing (open again and send/receive) it has solved it now. Nice and simple workaround.