https://www.dotnetzone.gr:443/cs/blogs/abekiaris/archive/2010/02/03/multiple-datastores-support.aspx  THE PROBLEM WorldCreator creates dynamic types for used within Xaf. It is doing that by compiling code templates at WorldCreator module setup method. To find those templates it has to query a persistent datastore using XPO. Now when you createelCommunityServer 2.1 SP3 (Build: 20423.1)