Actuall the GHI SDK 4.3 installer removes the MS-MF 4.2 assemblies and the support in visual studio. I re-installed MS-MF SDK 4.2 (not 4.1) and are able to work on older projects again 4.1 & 4.2
@ willgeorge - Thatās what I do all the time. It also means I can use one to test the new stuff from GHI and NETMF and will know that the stuff I really need to support will still work just fine. Virtual desktops are also really useful in this regards too. I used to use the VM Workstation solution, but I believe there are free ones about too.
I run the Oracle VM for Ubuntu to do Android Source development and I have Win XP VM I use for other software. The issue I have had is trying to get a USB device to connect to them.