MyBB Community Forums

I recently installed the Admin Post Edit plugin. It works fine for OPs, but when I try to use it with subsequent posts in a thread, it shows me this error message.

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1690 - BIGINT UNSIGNED value is out of range in '(`i2532895_mbb2`.`mbb_users`.`threadnum` - 1)'
Query:
UPDATE mbb_users SET `postnum`=postnum-1, `threadnum`=threadnum-1 WHERE uid='2' LIMIT 1

Any chance someone knows what could be done to fix this?

Why would you install that plugin...?