vBookie was working great on the 3.7RC3 test site I had setup w/ the aforementioned edits required to the plugin code to get it to work with 3.6.x
dkawika: Trying rebuilding the bitfields and see if that fixes your problem, I had the same issue with a former test site and it fixed the issue.
I haven't tried to put this on the new 3.7.0RC4 w/ the new token... if anyone has attempted this please give an update as I'd like to know also.
This mod has become a very important part of my site and my users would hang me if I couldn't get it working.