Nokia wml Extension - Dreamweaver 4.01

I'm trying to install the nokia wml extension in dreamweaver 4.01, extension
manager 1.5.

It gets through the accept license dialog, and completes the filler bar.
Dreamweaver is up during the install and it is found.

There is no error message, no entry in the extensions list, and no wml menu.

This is an old extension and ought to work. Am I doing something wrong?

Thanks,
Rick