I've created a very simple pinned linkage with a slot. This linkage is being driven by a linear actuator that is connected to it via a slotted mate.  Everything works fine in animation, but in motion analysis, the slot mate gets "ignored" by the solver and it fails to solve.  I've tried both the mechanical slotted mates and the path mates with no success.  I've also treated the actuator components as both a flexible sub-assembly and native to the full assembly with no luck.  Is there a workaround I'm missing?

I'm running SW 2014 Premium SP4.0