Every time I run certain applications (including but not limited to GIMP, Microsoft Visual Studio, and 3DS Max), I get the following message box:

There is a problem with your tablet driver. Please reboot your system. If the problem persists reinstall or update the driver.

Obviously I've tried rebooting and that hasn't fixed anything. Secondly, I'm not running a tablet PC. This is just Windows XP SP3 running on a Dell Precision PWS490 desktop workstation.

How do I get rid of these error messages? The applications still load normally after dismissing them, but they're rather annoying.

Using Process Explorer, I got the call stack from the message box. It's coming from wintab32.dll. Here's the call stack when running GIMP (irrelevant frames omitted):

...
8   USER32.dll!MessageBoxA+0x45
9   wintab32.dll!WTMgrPacketHookExA+0x44a
10  libgdk-win32-2.0-0.dll!gdk_display_list_devices+0x37
...

So, does anyone know how I can get an updated version of wintab32.dll or have any other ideas? I've been keeping my system up to date with Windows Updates. The timestamp on wintab32.dll is 2007-03-30 17:38, and its MD5 sum is ffdc332007c9dc6dd346c8ac2b09a015.