My drawing is showing the trouble color (brown?) in the feature manager, and it says their are mates that over define the assembly. When I go to the model there are no warnings, and when I tracked down a particular problem mate in the model, it looked to be OK. Everything in the model is OK (can I say that outloud?), but for some reason the drawing is balking. BTW: I bought Matt's SW2013 bible today, and I'm glad I got the Kindle version at 1204 pages!