Ok, I watched someone live had the same problem (they were streaming the game and I was able to narrow down the problem and this solution fixed it), but if you save the file as UTF-8 encoding, it will eliminate the Unicode errors, not sure why this happens, but I blame my lack of understanding the plethora of settings available in Visual Studio. Anyways, hope this helps, and I will try to update the files for these two demos upon next release... in fact, that may be the next release.
Thanks again,
Jeff