pkg_{add, admin, create, delete, info} error

Dear all,

I have NetBSD 5.1 installed on an SGI Indigo. This is a full install, from the CD. 
I get a strange error whenever I run any of the following commands: pkg_add, pkg_admin, pkg_create, pkg_delete, pkg_info: "Shared object "ourcepath" not found". The "ourcepath" part is _not_ a typo. It's the same for all of them, regardless of what arguments I run them with; increasing the verbosity level doesn't give me any additional output. 
Google doesn't give me anything on this one. I have a feeling it's something simple but, as I'm new at this *BSD thing, I'm stuck. Any solutions ?


Thanks,
Ovidiu