The following files are no longer part of VaultWiki and should be removed:
Code:
'src/addons/vw/vw/_core/controller/ui/edit/attach/xf0.php',
'src/addons/vw/vw/_core/controller/ui/edit/attach/xf2.php',
'src/addons/vw/vw/_core/controller/ui/edit/page/xf0.php',
'src/addons/vw/vw/_core/controller/ui/edit/page/xf2.php',
'src/addons/vw/vw/_core/controller/ui/edit/proxy',
Once these are removed, things should start behaving normally again.
The upgrade script has been updated to redirect you to an error message listing the files you need to remove, if the upgrade script is unable to remove the files automatically. Previously the error message was only visible if the admin manually visited a wiki-related admin page after upgrading. Since the upgrade process uses the XenForo add-on page rather than a separate wiki upgrade page in XenForo 2, this means that it was easy for XenForo 2 admins not to see this message.