I think I figured it out.
The problem seems to be with the "raising jackpot" used in the IBPro settings.
So removed all my setting changes using the vbux quick arcade editor, and just used the ibpro arcade settings.
The last problem, that I don't know a fix for is that the raising jackpot code seems to have a problem with increasing the jackpot when it is starting from zero.
So I just editted the newchamp plugin that came with vbbux and had it reset the jackpot to like 25 instead of zero after someone wins.
From there it seems able to raise it fine by itself, which works for me
So it looks like the ibpro code is all good and dandy, the mistake is somewhere in the vbbux ibpro plugin I guess.