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.