Thank you!
Here's another look at those issues to see how they responded.
1) Attempting to access VW settings makes my server time out
-- The VW settings in the AdminCP now have a distorted display, and the menu cannot be clicked on.
2) Attempts to create wiki pages from a group results in a no permission error when you go to save the page
-- Clicking on Add Content does nothing; just refreshes the social group page. Example:
http://www.enworld.org/forum/group.php?groupid=220
3) Edits of the default "description" wiki page don't change anything
-- I was able to edit that successfully. It looks hopeful that's fixed!
4) Disabling VaultWiki at least restores the default group description, but then profile pages will no longer load
-- I haven't tried disabling VW again yet.
5) Errors when trying to create group wiki pages (quoted below):
-- As mentioned above, clicking Add Content from the social group page does nothing.
Thanks for your help! I think we're getting there slowly!