The device drivers used for Logger Pro 2.1 conflicted with Win98. We have updated the drivers now installed to rectify the problem. To solve this problem on your computer you should download and install the latest version of Logger Pro. The program is available on the Vernier website at:

https://www.vernier.com/tech/lpupdates.html.

The newer version of Logger Pro will clear out the conflicting USB drivers and install the updated drivers along with the updated version of Logger Pro.