Cam Mate Problems

Hi,

I am having trouble with a Cam Mate. <-- Actually SW2006 SP4.1 is having
trouble...

It is a very simple assembly, a plate with a hole, a pin rides inside the
hole.

Cam Mate gives the yellow triangle exclamation point error: "The selected
faces do not form a closed and continuous cam extruded from a single
profile"...

Again, it is a round hole 7.5" dia (extrude-cut of a sketched circle) cut
into a 10.5" square 0.5" thick plate and a 0.260" pin (extruded circle
sketch) it doesn't get simpler or more continuous... there is a lever arm
holding the pin, it is free to revolve around, it just will not mate up to
the round hole! It was originally a closed spline curve and so I went back
to the simplest form (a circle), and still it does not work...

It worked in 2006 SP3.1 and doesn't in SP4.1.

Anyone else seen this or had recent Cam Mate problems?

Aron