Dark Market is just a themed market. If it's not working for you, you can try installing the regular market. Honestly I've been having troubles with the new market regardless of the ROM I'm on.
V6 and Supercharger are the same; if they're both included just use one or the other. The settings should be Run as Root (never run on boot) and Is Script. Nothing else should be checked.
Hope this helped.
By the way,
here's a link to the market unthemed if you'd like to try that.