Guys,
After playing around figured out problem was version difference in Phidget.msi - I was running slightly older version.
There are two versions of 2.1.1 - one releasd in June,2007 and another in October,2007 (the latest).
Version 4.3.1 has been posted for download on this site - download will be enabled shortly by the site's administrators.
Regards,
Alan.