>then copied (manually with pocketpc File Explorer and a shared folder on the PC) the XML file to the emulator

You lost me here...
As I said in the other answer to you, the VS.NET starts the emulator when I run debug, there is no PocketPC connected to the desktop. But, I have no idea how to copy something to the emulator - this could be the main problem that I have. From the errors I get, it looks like the emulator is looking for data under Programm Files directory - but it must be its Programm Files, not the desktop's.