@ehm1 I believe that if you are coming from UBB.threads 7.4.2p2, you should just be able to update directly to UBB.threads 7.5.9 using the installer/upgrader script.
I'm looking at the upgrader files, and they will allow upgrades from 7.0.0 all the way up to the current 7.5.9 version. You happen to be in between those with your stated version of 7.4.x.
I don't quite understand your post --
Are you manually attempting to upgrade your database and files?
or... Are you using the upgrade script that comes with UBB.threads 7.5.9?
or... Are you installing one version of UBB.threads after another, attempting to ascend through each version until you reach the current 7.5.9 version?
So I can better understand whats happening --
1) What version of UBB.threads were you running before you started having problems?
2) What version of UBB.threads are you attempting to upgrade to?
3) How are you attempting to upgrade from #1 to #2 ?
