Hi Matt,
I have downloaded version 6.0.0 and still have the following attribute problem when we are trying to install into Microsoft CRM 2011:
A managed solution cannot overwrite a Attribute component on the target system that has an unmanaged base instance. The most likely scenario for this error is that an unmanaged solution has installed a new unmanaged Attribute component on the target system, and now a managed solution from the same publisher is trying to install that same Attribute component as managed. This will cause an invalid layering of solutions on the target system and is not allowed.
I am current working through this on ticket #18335. If you have any advice, please let me know. I am thinking we need to get the Microsoft patch.
Cheers,
James