Thread:Project:Forum/mwiki page restrictions table erased/reply

The page_restrictions table was added for an experimental feature that was never turned on. It was later removed entirely. Nothing should be trying to use it, so I find that to be an unlikely explanation.

However, any missing tables could cause problems. Can you ask your host (it sounds like you don't have command line access yourself) to make sure that they've run update.php from the command line and copy+paste you the output?