Okidokey...lets get this very clear.
THIS ISNT READY !

Your old JazzCore is now out of date. It will have to be replacedwhen the new version comes out, it works completely differently, off completely new servers and is a hell of a lot better!

As for the Level editor, that is out of date too...hell all the old files are out of date, I had a complete rewrite and so nothing is the same as it was. I have just been awake for the last 20 hours (save for a 5 hour nap) writing the level editor which is coming along nicely.

I'll let you know when to try JazzCore but that WONT be for a few months yet.