I get this error when I try to run my analysis using a high quality mesh.  It runs fine with a draft quality mesh, so I am thinking it is some issue related to the mid-side nodes.  I have an SPR for this (586951), but am wondering if anyone else has encountered this and has a work around.

My analysis is an assembly containing surface models, since I am analyzing carbon fiber composite parts.  Let me know if anymore information would be helpful.