Hi Moose, I don't really have any idea of what I could do to fix this, MoI is not trying to access any special tablet features or treat it any different than it does a mouse...

The only thing that I can really think of is some kind of problem in the Wacom driver.

Your best bet is to try a different version of the driver which you can get here:
http://www.wacom.com/productsupport/select.cfm

- Michael