I've called. They offer ZERO support for the beta driver. They won't even talk about it a little.
Did you extract all the files and see if the dll or inf or whatever it's looking for is there?
7Zip program does a good job of extracting files from .cab containers and such.
I have setup Planar touch monitors on XP before, jut not those models. Maybe try a different model driver and see if it has what you need?