Run the USB install utility to remove the USB driver.

1. Start an MS-DOS prompt window
2. Type the following and press ENTER
“C:\Program Files\Vernier Software\Logger Pro (2.1)\wdreg” remove

3. You should see “Deleting driver entry… OK” and some other messages
4. Resart windows and see if the error message is gone

If you do not find wdreg.exe in the folder indicated in step 2, then try copying it from your installation CD root to the C: drive and run it as shown in step 2.