Found a bug in the Change group function. If you go to member management in the advanced section, build your list of the users to change to a group. In the drop down at the bottom select change groups and select All Members in Search. Now hit submit and select the group you want to change them to. Hit submit and this is the error that come up
SELECT t1.USER_ID,t2.GROUP_ID FROM ubbt_USERS as t1, ubbt_USER_GROUPS as t4 WHERE t1.USER_ID <> '1' and t1.USER_ID = t4.USER_ID and USER_IS_BANNED = '1' GROUP BY USER_ID ORDER BY USER_ID ASC
Unknown table 't2' in field list
If you select the Selected Members (on this page)
instead of the All Members in Selected members option it works fine. This was tested in IE6 & IE7 using 7.0.1