I am almost positive you're having the same problem we did using the Mayn version from zowex. Didn't know if you were a nub or not...you're not
So yes just restart the client and you should be fine. The only way Aeria or Mayn can patch a z coord hack is to actually change the files in the system so unless you just now got a maint what I suggested should work.
If not....good luck recoding my friend I heard it's really tedious to code a teleport hack.