I haven't come across a problem like that...throw it at me and I'll see if I can figure it out, Steve.
It's a problem with 15g - the models with the squetch rig used in Tinwoodman work in 15g, the ones with the new squetch (used in Scarecrow) don't work in 15g (I believe lite rig has same problem, not sure)...they all work in ver 15 e,f...Perhaps it is related to which version of A:M the model got rigged?
I just checked (in v15g) a few models I have that were rigged in v13t...they work fine. Those have versions of the rig that have been worked on in the past year, so maybe there's something different. I know that Expressions have changed slightly since the original TWO characters were rigged and now require some parentheses to be added, but that's the only thing that I think have been encountered prior to this problem.
If I can get a model from someone that is confirmed to not work, I'll do some checking...either post it in this thread or shoot me an e-mail.
----------------------------------
EDIT
----------------------------------
I'm thinking I should release a rig update when I get the tail done, but before I get the face rig update finished...there have been so many updates and fixes, I feel like it's due (then, I'll post another update once the face rig update is finished). I'll also want to make sure this new problem is taken care of.