Microsoft made changes to Win2K and WinXP in Service Pack 2 which causes an installation fault with the 3rd-party drivers we use for installing our PCI90 and PCI93 products. There is an updated version of the driver available from our I2C Driver Updates page - follow the link in the menu at the left of your screen.
You must fully remove the old driver using Windows System Restore, then install the updated driver.
If you are using drivers from CD version 3.9 or earlier you must download the update for PCI90/PCI93. It is also recommended that UCA93 users download an update although this is not essential.