Users Not syncing

Hi

I can not get User Synchronization to work at all. It just doesn't do anything.

It says its suspenseful but nothing changes.

I have looked at the error logs in debug mode they read:

Master site

[2012-04-23 20:59:02][M] 0-10 - ajax actions***
[2012-04-23 20:59:02][M] 07 - added new sub site***
[2012-04-23 20:59:02][M] 0-10 - ajax actions***
[2012-04-23 20:59:02][M] 08 - count of users= 513;;***
[2012-04-23 20:59:02][M] 02 - sending request - url=http://dev4.designer-cakes.com/wp-admin/admin-ajax.php?action=user_sync_api;;***
[2012-04-23 20:59:04][M] 03 - sending request - response=
6b1f27750e1b9b5674280a063f9e84cd;;***
[2012-04-23 20:59:04][M] 06 - checking key false;;***
[2012-04-23 21:03:03][M] 02 - sending request - url=http://dev4.designer-cakes.com/wp-admin/admin-ajax.php?action=user_sync_api;;***
[2012-04-23 21:03:04][M] 03 - sending request - response=
d05d7a8f8a8b22f637ee16a8c3f3c4ca;;***
[2012-04-23 21:03:04][M] 06 - checking key false;;***
[2012-04-23 21:04:58][M] 02 - sending request - url=http://dev4.designer-cakes.com/wp-admin/admin-ajax.php?action=user_sync_api;;***
[2012-04-23 21:04:58][M] 03 - sending request - response=
ea97971feaa0455e1a67531a03d6e285;;***
[2012-04-23 21:04:58][M] 06 - checking key false;;***

Subsite
[2012-04-23 20:59:01][S] 01 - new subsite conection - central_url=http://www.designer-cakes.com;; replace_user=0;; overwrite_user=0;;***
[2012-04-23 20:59:01][S] 02 - sending request - url=http://www.designer-cakes.com/wp-admin/admin-ajax.php?action=user_sync_api;;***
[2012-04-23 20:59:02][S] 03 - sending request - response=ok;;***
[2012-04-23 20:59:02][S] 01_2 - sync users for new subsite***
[2012-04-23 20:59:02][S] 02 - sending request - url=http://www.designer-cakes.com/wp-admin/admin-ajax.php?action=user_sync_api;;***
[2012-04-23 20:59:04][S] 0-10 - ajax actions***
[2012-04-23 20:59:04][S] 03 - sending request - response=ok;;***
[2012-04-23 21:03:04][S] 0-10 - ajax actions***
[2012-04-23 21:04:58][S] 0-10 - ajax actions***

Can you give me any help with this please?

Kind regards

Paul