I'm using WOrdpress MU 2.8.6 with BuddyPress installed.
Might site stopped working in it's entirety.
I got the following error once I enable caching:
If your blog does not display, please contact the owner of this site.
If you are the owner of this site please check that MySQL is running properly and all tables are error free.
Database Tables Missing.
Database tables are missing. This means that MySQL is either not running, WPMU was not installed properly, or someone deleted . You really should look at your database now.
What do I do now?
Read the bug report page. Some of the guidelines there may help you figure out what went wrong.
If you're still stuck with this message, then check that your database contains the following tables:
If you suspect a problem please report it to the support forums but you must include the information asked for in the WPMU bug reporting guidelines!