Whoa! Uh, yeah, so long story short RPG Maker games don't like when you have more than one instance running, and it seems like you have a bunch of them all open at once, not closing properly for one reason or another. Don't fear though, a few people have had this issue.
I would recommend, cliché as it sounds, just shutting down and restarting your computer to clear out all these other instances, and then just try again.