http://blogs.msdn.com/b/webdav_101/archive/2008/05/06/cdosys-breaks-after-removing-outlook-express.aspxYep, that will do it. There is a relationship between CDOSYS and Outlook Express. So, you should not remove Outlook Express if you ever expect to use CDOSYS or have anything which uses CDOSYS work properly. Some people get very ambitious about securityenTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/webdav_101/archive/2008/05/06/cdosys-breaks-after-removing-outlook-express.aspx#8463837Tue, 06 May 2008 23:14:15 GMT91d46819-8472-40ad-a661-2c78acb4018c:8463837Basketball Chat &raquo; Blog Archive &raquo; CDOSYS breaks after removing Outlook Express.<p>PingBack from <a rel="nofollow" target="_new" href="http://www.basketballs-sports.info/basketball-chat/?p=1234">http://www.basketballs-sports.info/basketball-chat/?p=1234</a></p> <img src="http://blogs.msdn.com/aggbug.aspx?PostID=8463837" width="1" height="1">