I had the same error with "3031" and "jeterr40.chm" (win xp), done what "madjim" said to do (delete old database's), and latest version of H4x seems to be stable and looking good so far !
I have 2 shows this weekend, and i'm lookin' forward to tryin' H4 Live.
Love the instabuttons
Well done people.
Dave (london UK)