I am receiving the following errors in the sugarcrm.log:

"Wed Oct 26 14:57:39 2011 [15067][30698a43-ee40-0014-c3dc-4d4060388b8c][FATAL] Missing relationship definition leads_campaigns. skipping leads_campaigns subpanel"

AND

"Wed Oct 26 14:53:27 2011 [12288][1][FATAL] Error fetching relationship from cache leads_campaigns"

It seems to be causing errors when trying to use the API to sync mailing lists.

I am using Version 6.0.3 (Build 4339)

I have tried to repair and rebuild my relationships in Admin, but that has not helped. Any help would be greatly appreciated.