If you are using vBulletin 4.2.2, you must use VaultWiki 4. If you need to import from MediaWiki, do that first though. Based on the last update, VaultWiki 3 has reached End-of-Life. If you can't upgrade yet, follow vBulletin support's instructions to disable error output for old mods.
We might eventually fix these for the new errors but it is unlikely since development is full steam ahead on new updates to version 4.