Autocad Drawingboard III and Notebook Computer

I have a Calcomp Drawingboard III Digitizer Tablet, a notebook computer with
an Alps touch pad and a USB Logitech Trackball.
Autocad doesn't seem to see the Digitizer Tablet.
It says that the pointer device cannot be used as a tablet.
I tried disconnecting the USB trackball and it still gives this error.
Additionally I tried versions 10, 10.1 and 10.2 of the Calcomp drivers.
Also tried Serial and USB for the tablet ( I have the USB adapter)
I have tried all sorts of combinations for the Tabletworks. Wintab, Contab,
and Mouse modes.
All result in the same error.
Anyone have any ideas?
Reply to
Steven Green
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