Ok if you'd like, find me on the chatroom one of these days or anyone else really, and try to figure out what's not to blame, one step at a time. Get on with someone else you haven't played with yet, ask someone with ports forwarded to host and you join. Then try with hamachi again with a stranger. If you're still having trouble getting in, then I don't know where to go from here. Wait for a dev, but make sure you try these steps first, and if you already have, let us know.