Thanks TimI for testing it for me, I have now also installed a virtual Windows Machine at Amazon, and continued testing and fixing.
I am now quite confident that Visual Studio files load fine, and do not show unexpected warnings during a build.
One thing about the Developers Assistant: if Bazaar is not installed, there is a message box at each start, and I wonder if we can only show it once? For this quick setup, Bazaar is not required.
I will merge my branch into trunk soon.