[xSidebar] Help! Read mail disappears for good!

[Thyme Wisper]

Hello.  I desperately need your help.

I installed xSearchbarT2 0.3 today.  I thought it was great until I 
discovered that once I selected view 'unread', I could not ever view the 
read messages again, even when I changed to view 'all'.  Frustrated I 
uninstalled xSearchbarT2.  To my surprise, I still could not get my 
unread messages.  What was worse, once I read a message, it disappeared 
as well!  Yet this is only for the inbox in the account that I had 
'tried out' with xSearchbarT2.  My other account worked as expected.

How do I get my 'read' messages back?  This is an urgent situation for 
me. I cannot read my mail, because it will disappear!  Please respond.

Thank you,
Thyme