[Evolution] folder "mismatch" has me stopped cold Evo. 1.4.6, SuSE 9.1

["Gerald D. Pine" <gdpine sbcglobal net>]

When I tried to empty my trash folder this morning I received the
following message indicating a problem with my "sent" folder.

Error while 'Expunging folder':
Error storing `Local folders/Sent': Summary and folder mismatch, even
after a sync

I assume that this message means that the number of messages in the folder
does not match the number that Evo thinks should be there.  I can imagine
several things that could have happened to cause such a mismatch--the most
likely being that I inadvertantly deleted a message from the sent folder
and it didn't get recorded.  

The real question is how do I recover from this error.  I can't empty my
trash folder at this point because of the error.