The pmquota column is expecting an integer. -1 is not an integer nor is it used in MyBB for this column. I assume you don't want the said usergroup to be able to receive/send PMs? If so, you can set pmquota to 0 and canusepms to 0.
Plugin Count: I lost count.
Public Plugins are available here.
Please do not PM me for support unless asked to.
Public Plugins are available here.
Please do not PM me for support unless asked to.