Config (removed the sensitive info): http://pastebin.com/PXCuktTE

Some players (namely new ones) are not getting their rank. The console spits out the following.

For me, the admin:
23.12 05:03:43 [Server] INFO [05:03:43 INFO]: [CommunityBridge] SELECT mgroup_others FROM IPB_members WHERE member_id = '1'
23.12 05:03:43 [Server] INFO [05:03:43 INFO]: [CommunityBridge] SELECT member_group_id FROM IPB_members WHERE member_id = '1'

For a "Ninja" rank user (first rank after registering):
23.12 05:03:44 [Server] INFO [05:03:44 WARN]: [CommunityBridge] Not changing web application group due to web application group ID lookup failure for: . Player 'Preston_does_MC' primary group state unchanged.
23.12 05:03:44 [Server] INFO [05:03:44 INFO]: [CommunityBridge] SELECT mgroup_others FROM IPB_members WHERE member_id = '1837'
23.12 05:03:43 [Server] INFO [05:03:43 INFO]: [CommunityBridge] SELECT member_group_id FROM IPB_members WHERE member_id = '1837'

For guests:
23.12 05:03:44 [Server] INFO [05:03:44 INFO]: [CommunityBridge] SELECT mgroup_others FROM IPB_members WHERE member_id = ''
23.12 05:03:44 [Server] INFO [05:03:44 INFO]: [CommunityBridge] SELECT member_group_id FROM IPB_members WHERE member_id = ''

I've tried everything. Upon a reboot, everyone's ranks load perfectly, then they start spitting out errors and removing ranks.