Straight from SQL Server Management Studio the SQL code in the package worked like a charm.  It is somewhere during the conversion to the DNN db & object qualifier process that this breaks. 

Bertcord, when you said to drop the dbo schema in the constraints, were you referring to the DNN qualifiers or any reference to dbo?  With [dbo].[xxx   on all constraints (from SQLS) it works fine. 

I finally got this working, but had to remove the if not exists checks on FK's.  If anyone knows the proper placement of the databaseowner and objectqualifier tokens for this - I'd appreciate learning that!  I may have trouble on the uninstall SQL script until I figure that out. 

Here's one line (of many - so it is getting old trying to figure this out).  This fails at the foreign_keys and sys.foreign_keys.