TinyMCE Comments not working in 2.8.3

TinyMCE Comments is causing error messages in 2.8.3 for me. If I disable the plug-in, the error messages go away. This is what I see in the Dashboard under the “Comments” section:

WordPress database error: [MySQL client ran out of memory]
SELECT * FROM wp_posts WHERE ID = 40 LIMIT 1

WordPress database error: [Lost connection to MySQL server during query]
SELECT * FROM wp_posts WHERE ID = 40 LIMIT 1

WordPress database error: [MySQL server has gone away]
SELECT COUNT(comment_ID) FROM wp_comments WHERE comment_post_ID = 40 AND comment_parent = 0 AND comment_approved = '1' AND comment_date_gmt < '2009-07-28 21:59:55'

WordPress database error: [MySQL server has gone away]
SELECT * FROM wp_posts WHERE ID = 40 LIMIT 1

WordPress database error: [MySQL server has gone away]
SELECT * FROM wp_posts WHERE ID = 40 LIMIT 1

Any ideas? Thanks.