Dot2slash -
Try using the new 2.3.1 xml
While I was working on the large number of changes from 2.2 to 2.3 I was using letters in the versions. It seems that it is not supported in vbulletin. 2.2c is what was in the old xml to do the ei_folder changes to the database. Everyone who went from 2.2 to 2.3, vbulletin ignored that code. Note to programers.. only use .'s and numerics in your versions

Something I didn't know about
FYI to all - Justchecking's main problems seem to have revolved around bugs in eaccelerators 0.9.5.1 version. After upgradin to 0.9.5.2 there was no longer a conflict error. It seems that other programs like drupal were also affected by that bad version of eaccelerator.