PS plugin problem

I just installed the Panotools plugins for PS in another machine, but
I'm having some trouble making it work.

When I try to use the Adjust plugin I click in "set" and configure all
the options for Insert/Extract. Problem is that when I try to apply the
filter I get this message:

"Please set panorama Width/Heigh"

Of course I am doing it, so it seems the plugin is having trouble
reading the parameters.

This machine is running a Windows 7 64 bits but the PS CS4 is a 32 bits
version.

Any idea?

Thank you.