WPrefs preferences of windowmaker not found

[Riccardo Mottola <riccardo.mottola%libero.it@localhost>]

Hi,

I have installed windowmaker 0.95.6nb1 from pkgsrc.
I notice that I don't have the classic included configure option, which 
is usually accessible from the menu (configure windowmaker) or by an 
icon tile top right.
The item from the menu will give me a "could not execute"

By doing a search on the whole hard disk, I found that the binary 
exists, but lives in /usr/pkg/share/GNUstep/Applications/WPrefs.app/WPrefs

this is a path where it can't get found, executed manually it works fine.

I use this for years. I wonder what changed: the location of the binary? 
Or ?

Thanks,

Riccardo