I did it for you:
The mail store has been corrupted in some way, most probably by one of the
most often used Antivirus applications?
Norton, McAfee or Trend Micro are known to cause many problems in WM,
when
they are set to scan mail.
Consider disabling that feature.
Better still, remove from your system and install one of the free AV's
available on the net, I use AVG Free.
Let's have a go at your current problem?
Go to Tools>options>advanced>maintenance>message store.
Select and copy the location.
Cancel your way out of there.
Select the Recovered Message folders and delete them, then empty the
deleted
items folder.
Close WM !!!!
Go to Control Panel>classic view (top left)>folder options>view tab>enable
Show hidden Files and Folders>apply/ok your way out.
Now go to the Start Button>Run, and paste the message store location, that
you copied earlier, to the run line>OK
This will open Windows Explorer to your message store find and delete all
of
the Recovered Message folders.
Close WExp.
Do not Open WM yet !!!!!
Try using this utility to repair and compact the mail store, with WM
closed
WMUtil
http://www.oehelp.com/WMUtil/
Please read the instructions.
Hopefully, that should sort you out for now, but consider my opening
comments regarding the various AV Applications.
If you need any more help then get back to this thread.