Win XP.
No antivirus, but comodo firewall 3.9 (old). I exited CFW but still can't run.

Does MAPC depend on some windows service perhaps?

I downloaded Mars notebook, extracted the portable. But it won't start. Then proceeded to do a full install, installs fine, but Mars Notebook still won't start. It's not in the task manager or anything. Seeing that the last development activity was in 2013, I would think it's very likely it should w...