If you are unsure if you have the latest version of the Pen Software and Touch Panel Driver, you can find the newest versions in the links below:
After you install each of these, restart your computer, and you will have the latest versions of the Pen Software and Touch Panel Driver.
If you need to completely remove the software and re-install it, go into the add or remove programs section of the control panel. Uninstall the Sharp Pen Software.
Before you move on to the next step you will need to exit the settings tool. To do this, click on the rectangular, maroon icon in the lower right corner, then click Exit.
Uninstall the Touch Panel Driver.
After they have both been uninstalled, restart the computer.
Then re-install the Touch Panel Driver and Pen Software. Download links can be found below:
After these have both been re-installed, restart the computer, then everything should work as expected.