Ink does not work correctly with the pen display.
There may be a problem with the Ink preferences.
Remove the damaged preference files as follows. They will be
1.Open the SYSTEM PREFERENCES pane, choose SHOW ALL and select INK. Then turn off handwriting recognition.
2.From the GO menu, choose your HOME. Open the
LIBRARY and PREFERENCES folders. Remove the following preferences:
•COM.APPLE.INK.FRAMEWORK.PLIST
•COM.APPLE.INK.INKPAD.PLIST
•COM.APPLE.INK.INKPAD.SKETCH
3.Go back to SYSTEM PREFERENCES and INK, and then enable handwriting recognition.
4.Test the Ink function using your Wacom pen display and pen.
If this procedure does not resolve your problem with Ink, contact Apple Support for further assistance. Wacom is not the software manufacturer for Ink and we are limited in our abilities to support a third party software application.
Troubleshooting Page 56