The "None" option appears in the middle of the list of "Source Code Management" options which is sort of weird. It should be the top option, and the list of possible version control schemes should be listed below it.

I tried fixing this myself in the source code but it looks like there's just too much magic going on - I tried grepping the source code for "Projectset" which is a word that shows up on screen but couldn't find any files related to CVS or non-abstract SCM classes.