hmm...thats odd.
Did you realy patch the game fully? Through Zonematch? Or did you download the patch?
I rememberd that i downloaded the patch and did only update the auto-download in zonematch. Perhaps this could have something to do with it?
This is the
FULL UPDATE english-us version.
Me and some friends did it this way, and it works smoothly for us all. Both hosting and playing through Zonematch.