UPDD utilises two kernel component to post touch data to the OS.

One component creates a virtual mouse device such that touch data can be posted on the mouse interface the other creates a virtual HID device such that touch data is posted on the HID interface.

These virtual devices list in the Device Manager.

For the driver to be able to utilise these interfaces the virtual devices must be installed and working as expected. Any device errors will result in these devices being listed with a '!' superimposed on their entry in the device manager, as per this example:

In this case the driver will issue a notification, as seen above, warning there is an issue with the mouse interface.

The message means that the mouse interface connection can not be opened by the driver.

Typically this needs a reboot to resolve. The issue typically correlates to the situation where the device entry in the Device Manager shows that the device is installed but needs a reboot.

Certainly after the initial install of the driver sometimes Windows kernel drivers need a reboot to work and this message indicates this may be the case.

In Windows 7 this issue can also be as a result of certificate issues caused by an out of date OS patch status as covered by this KB entry.