Another Undefined index: imageApprover problem

Hi, I'm totally new to site building and thought of using CB to manage users.
I am having this warning:

Notice: Undefined index: imageApproverGid in C<span>:</span><span>\</span>wamp\www\Sitejoomla\administrator\components\com_comprofiler\controller\controller.default.php on line 1230
Call Stack
# Time Memory Function Location
1 0.0059 699872 {main}( ) ..\index.php:0
2 1.6445 6984056 JAdministrator->dispatch( ) ..\index.php:47
3 1.6690 7493824 JComponentHelper::renderComponent( ) ..\application.php:153
4 1.6995 7552232 require_once( 'C<span>:</span><span>\</span>wamp\www\Sitejoomla\administrator\components\com_comprofiler\admin.comprofiler.php' ) ..\helper.php:156
5 1.7074 7733336 require( 'C<span>:</span><span>\</span>wamp\www\Sitejoomla\administrator\components\com_comprofiler\admin.comprofiler.controller.php' ) ..\admin.comprofiler.php:29
6 1.7758 10017480 _CBloadController( ) ..\admin.comprofiler.controller.php:218
7 1.7858 12114000 require_once( 'C<span>:</span><span>\</span>wamp\www\Sitejoomla\administrator\components\com_comprofiler\controller\controller.default.php' ) ..\admin.comprofiler.controller.php:104
8 1.9308 21844120 showConfig( ) ..\controller.default.php:81

It appears on my configuration page
On the user profile page of the site (frontend). This warning appears

Notice: Undefined index: imageApproverGid in C<span>:</span><span>\</span>wamp\www\Sitejoomla\administrator\components\com_comprofiler\library\cb\cb.acl.php on line 755
Call Stack
# Time Memory Function Location
1 0.0067 696888 {main}( ) ..\index.php:0
2 3.8581 7526560 JSite->dispatch( ) ..\index.php:43
3 3.8825 8000008 JComponentHelper::renderComponent( ) ..\application.php:187
4 3.9169 9192992 require_once( 'C<span>:</span><span>\</span>wamp\www\Sitejoomla\components\com_comprofiler\comprofiler.php' ) ..\helper.php:156
5 4.1098 18390496 userProfile( ) ..\comprofiler.php:284
6 4.1327 19099760 HTML_comprofiler::userProfile( ) ..\comprofiler.php:694
7 4.2372 23365184 isModerator( ) ..\comprofiler.html.php:385
8 4.2372 23365184 CBACL->get_user_moderator( ) ..\cb.acl.php:800

I've seen other topics concerning this problem but they didn't help as the answer was to update to 1.7 which I just downloaded today.

I'm using joomla 1.7 and CB 1.7

Much help needed.....thanks

Edit
Apparently I found something..
I went to the moderation tab (the lines above the "faulty" line were talking about moderating pictures or something (remember I know nothing about code)) in config and put everything to "no" and the warning disappeared both from back and front end.

Still need some help

Edit
I put them all back to "yes" one by one and warning message did not come back.
Don't know what to say... except I'm gonna be much tired at work tomorrow...but pretty happy/proud of myself (remember I know nothing about php)

Still if you have an explanation..

Anyway, this might help someone one day