Has the Mechanism Extension been un-bundeld from Creo?
I was told recently that upgrading Creo is significantly more expensive if you want to keep the mechanism extension that came with Creo Elements/Pro Foundation XE. A baseline upgrade to Creo 3.0 would disable that module entirely. This was a little surprising because Foundation XE was the baseline bundle as well. That's not much of an incentive to upgrade.
I'm not sure when this happened exactly. Possibly with Creo 3.0. My Creo 1.0 licence does include the mechanism extension.

