OK, I'm confused. Are you using version 2.0 of the LLBLGen Pro designer? And you've regenerated your code using 2.0, and now you're still getting this error:
Error 10 The base class or interface 'SD.LLBLGen.Pro.ORMSupportClasses.EntityCollectionBase' in assembly 'SD.LLBLGen.Pro.ORMSupportClasses.NET20, Version=1.0.2005.1, Culture=neutral, PublicKeyToken=ca73b74ba4e3ff27' referenced by type 'Info.WebMailPro.ORM.CollectionClasses.SubscriberTopicCollection' could not be resolved
Is that correct? Because this error states that you're trying to bind to version 1.0.2005.1 of the SD.LLBLGen.Pro.ORMSupportClasses.NET20.dll. Can you clarify?