Need help with correctly uninstalling a mod

[apokphp]

The vbprojects light version doesn't seem to be supported (so I don't expect much help in that thread). If anyone can help out here, it'd be greatly appreciated...

Need help asap. I have tried to uninstall this hack, but it does not uninstall correctly. When I try to change a usergroup's permissions, the area for setting the permissions of this hack, still exists (it is just all blank). And when I try to save any setting for any usergroup, I get this error:

Database error in vBulletin 3.7.0 Beta 4:

Invalid SQL:
UPDATE usergroup SET

### UPDATE QUERY GENERATED BY fetch_query_sql() ###
`title` = 'Registered Users',
`description` = 'Member',
`usertitle` = 'Member',
`opentag` = '<font color=\"black\">',
`closetag` = '</font>',
`passwordexpires` = '0',
`passwordhistory` = '0',
`mgccustomusergroupperms` = '831',
`nbmsgshowchatbox` = '0',
`mgcvbprojetsugpcustomperms` = '0',
`forumpermissions` = '3928575',
`genericpermissions` = '1420302279',
`attachlimit` = '0',
`pmquota` = '120',
`pmpermissions` = '3',
`pmsendmax` = '5',
`calendarpermissions` = '63',
`wolpermissions` = '5',
`adminpermissions` = '0',
`genericpermissions2` = '1',
`genericoptions` = '62',
`profilepicmaxwidth` = '150',
`profilepicmaxheight` = '150',
`profilepicmaxsize` = '65535',
`avatarmaxwidth` = '120',
`avatarmaxheight` = '120',
`avatarmaxsize` = '8000',
`signaturepermissions` = '139263',
`sigpicmaxwidth` = '500',
`sigpicmaxheight` = '100',
`sigpicmaxsize` = '20000',
`sigmaxrawchars` = '500',
`sigmaxchars` = '400',
`sigmaxlines` = '5',
`sigmaxsizebbcode` = '3',
`sigmaximages` = '1',
`albumpermissions` = '127',
`albumpicmaxwidth` = '600',
`albumpicmaxheight` = '600',
`albumpicmaxsize` = '100000',
`albummaxpics` = '100',
`albummaxsize` = '0',
`usercsspermissions` = '31',
`visitormessagepermissions` = '63',
`socialgrouppermissions` = '115'
WHERE usergroupid=2;

MySQL Error : Unknown column 'mgcvbprojetsugpcustomperms' in 'field list'
Error Number : 1054
Date : Sunday, March 23rd 2008 @ 08:38:06 AM
Script : xxxxxxx/forums/admincp/usergroup.php?do=update
Referrer : xxxxxx/forums/admincp/usergroup.php?do=edit&usergroupid=2
IP Address : 70.181.250.21
Username : Apokalupsis
Classname : vb_database
MySQL Version : 5.0.45-community

How do I get rid of this error message?

btw, I currently am running vb 3.7.

[Opserty]

You haven't removed a bitfield_*****.xml file, that is associated with that modification, from your includes/xml folder.