When I open up the Tablet PC Input Panel in Vista or Windows 7 TwistedBrush closes, why?
There is a compatibility issue with the Tablet PC Input Panel and TwistedBrush that can result in this behavior. Note, installing a Wacom tablet will also enable the Tablet PC Input Panel in case you don't have a keyboard. To reduce the chance of accidentally opening the Tablet PC Input Panel which is docked on the side of your desktop, you can disable it.