The versionnumber issue was already manually fixed by using PHPMyAdmin (enable debug mode
http://www.vbulletin.com/forum/showt...le+debug+mode).
For giggles: I put it back to 3504 and now the original installer supplied with beta5 did run. I do not have a dump of the testdatabase, but I guess the previous beta already didn't install the version number -> causing the installer to quit.
After a lot of manual SQL fixes, I ran the installer how it should be run. Maybe the very first install of the previous beta did not add the version number for me.
Maybe an extra note for upgraders, when you upgrade from say beta2 to beta5, you get the success message and may think you're ready. You're not and need to make more runs. It works like updating vbulletin when skipping some upgrades, but it does not proceed automatically.
Good news about a final version Revan.