Hi:

 

System registry cleaners such as this are of dubious benefit, and often can damage your registry. I would avoid them like the plague.

 

A better site to explore for answers to your OE error message is here: http://www.insideoutlookexpress.com/

 

I would also repost your question, quoting the full and exact content of any error message/details, to the "Other Software" board:
http://www.dellcommunity.com/supportforums/board?board.id=sw_other