I'm probably missing something new in VS2010 but so far haven't figured it out. When I try to add a reference to a MicroFour DLL to a project no MicroFour DLLs are displayed on the .Net tab of the Add Reference window. I have VS 2005 and VS2008 installed on the same system and they work fine; all the MicroFour DLLs show up in the list. I tried removing and re-installing SF but that didn't change anything.

Thanks Dustin. Attached is a screen shot of my HKLM\Software structure. I'm assuming that v2.0.50727 is the result of some Microsoft update. The issue was that the Strata Frame key was not in AssemblyFoldersEx.