I got an alert from Scribe support; it seems there's a major issue with the latest CRM 2011 Rollup.
Microsoft released CRM 2011 Rollup 4 (RU4) late last week (http://support.microsoft.com/kb/2556167). If you use many:many custom and intersect objects, you will receive the following error:
Required member 'LogicalName' missing for field 'Moniker1'
As a result, you will not be able to make data links to the applicable fields.
This is a Microsoft issue with their latest rollup.
If you are working with CRM2011 on Premise and use many:many custom and intersect objects it is recommended not to apply this rollup to your deployment until the issue is resolved with Microsoft.