Okay regarding this, I don't know why it's different now that you upgraded vBulletin, in fact it should have been pretty bad on 4.1.2 as well. The issue is the number of forums you have on forum home, it evaluates around 500 templates. VaultWiki had to use a pretty bad hook involved with the template system because vBulletin gave us no other alternatives, and starts to show after around 100 templates used on one page.
Anyway, when you upgrade VaultWiki, make sure to disable the following plugins:
- Search - Continue Fudging Content Types
- Search - Fix Result URLs
This will have the following side effects:
- Wiki search results will show as posts, won't use wiki permissions, and you won't be able to use the "Jump to Article" option.
- When inserting a Wiki Image to the editor using the Enhanced Asset Manager, it will use the ATTACH BB-Code instead of the appropriate wiki image tag.
The reason the search results are wrong is that, even with the new hooks in vBulletin 4.1.12, we still can't change content types mid-search. VaultWiki is handled by search like a second content type, but we tell the search to use the post content type instead. Without a hook to change the contenttypeid back, we can't tell the search to let VaultWiki handle the results too. Until VaultWiki is stored completely as a separate content type, these search results will be wrong while the plugin is disabled.
As for the Enhanced Asset Manager, it looks like this can be fixed for the next release by attempting something even more hackish.
PS If this post sent an instant email please let me know.