@Sai01:
Your Problems are on some Version that did not correspond with what we have got here.
You talk about RC3 but you mean vBulletin RC3 and ibProArcade 2.5.1 which was available here on vb.org some months ago but was removed due to copyright reasons.
What we have got here is a complete improved and LEGAL version of ibProArcade, but not v2.5.1 (what you once got here) but 2.5.3+
Support for that old v2.5.1 is not given here, you should take this new version and use it, and if then some problem arise we can and will help you