http://developers.de/blogs/damir_dobric/archive/2006/10/19/970.aspxThis error occurs, when the target service is configured for reliable messaging and the client not. To configure the service or client for enabling of reliable message two approaches can be used: Programmatically or by using of configuration. FollowingenCommunityServer 2008 SP1 (Build: 30619.63)http://developers.de/blogs/damir_dobric/archive/2006/10/19/970.aspx#1618Wed, 24 Oct 2007 14:26:42 GMT7e491611-45ad-4dae-a68f-c4cb64439510:1618Drew<p>Thank you. &nbsp;Saved my head from some bruises :)</p> <div style="clear:both;"></div><img src="http://developers.de/aggbug.aspx?PostID=1618" width="1" height="1">http://developers.de/blogs/damir_dobric/archive/2006/10/19/970.aspx#1441Wed, 11 Jul 2007 17:46:14 GMT7e491611-45ad-4dae-a68f-c4cb64439510:1441Grant<p>Thanks! &nbsp;This helped a lot!</p> <div style="clear:both;"></div><img src="http://developers.de/aggbug.aspx?PostID=1441" width="1" height="1">