Trouble installing RTx-Rights Matrix

To all,

We keep our RT in a different directory than /opt/. RT runs well and 

all IS well. I downloaded RTx-RightsMatrix to our version of src under
that initial directory (/ours/rt/src). Now, when trying to install RT
(from /ours/rt/rt-3.6.4), when it asks for the path, no matter what I
type in, it doesn’t like the path I give it (/ours/rt/rt-3.6.4/lib).
I’ve tried adding a slash at the end, just typing in the lib part and
several other variations and it just doesn’t work.

 I think I need to change something in one of the src files but 

don’t know which one or why. Do anyone have any ideas? Thanks.