I have searched this one and not really found a fix to this. I have an assembly called ASSY1. I insert part P1 and constrain it to ASSY1's coordinate system. At this point, ASSY1 is fully defined. I then insert P2 and constrain it to P1 using 3 orthogonal faces on each part. At this point, ASSY1 is fully defined.
I then Linear Component Pattern P2 in 2 directions with one skipped instance. At this point, ASSY1 goes "Under Defined". There are no ( - ) symbols in the Assembly Navigator and I have tried rebuilding.
Any thoughts? I am using SW2015. Thank you.