I get an error like this whey I try to do a backup:
WARNING: Database error Cannot load from mysql.proc. The table is probably corrupted for query SHOW FUNCTION STATUS
[03-Mar-2013 09:18:55] PHP Fatal error: Call to a member function fetch_assoc() on a non-object in /xxxx/xxxxx/xxxxx/xxxx/xxxxx/wp-content/plugins/backwpup/inc/class-mysqldump.php on line 218
[03-mar-2013 10:18:55] ERROR: Call to a member function fetch_assoc() on a non-object
[03-mar-2013 10:18:55] 1. Script stopped! Will start again.