http://msmvps.com/blogs/theproblemsolver/archive/2008/05/14/using-multiple-workflowruntime-objects-in-a-single-appdomain.aspxFor some reason a lot of people seem to think that only a single WorkflowRuntime object can be created in an AppDomain. And it isn&#39;t just the average Joe out there who seems to think so, no even book authors describe this behavior as the WorkflowenCommunityServer 2008.5 SP2 (Build: 40407.4157)http://msmvps.com/blogs/theproblemsolver/archive/2008/05/14/using-multiple-workflowruntime-objects-in-a-single-appdomain.aspx#1688239Fri, 17 Apr 2009 02:59:17 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1688239DesFlestetymn<p>nice, really nice!</p> <div style="clear:both;"></div><img src="http://msmvps.com/aggbug.aspx?PostID=1688239" width="1" height="1">