The reason you're getting that exception is because you chose to install the DevExpress wrapper, and you don't have the correct version of DevExpress installed on your machine.  There was probably an inner exception that said that .NET could not locate the certain DevExpress assembly.  There are two different versions of SF 1.4.1 Pre-Release that are compiled for the two most common DevExpress versions.  If you have a different version than 6.1.5 or 6.1.4, then you'll need to recompile the source code for your version.

Can someone ellaborate more on how to do this. Totally new to StrataFrame and VS2005

Regards

Framirez