When doing a hard disk install (text), It asks for the partition where the ISO's are to be found. I chose /dev/hda12, and then it needs the path to the files. I put "/fisher" since the files were in that partition under "fisher". I tried some more but it kept failing so I rebooted to try again, while talking to msf on the phone. This time I missed putting the "/" at the front and it worked fine. The code should be modified to strip leading "/" chars. Also, due to another bug in the install I had to start over (already bugzillad) and this time I typed in the "fisher" part first, and then tabbed to the top to pick the partition. The installer would not let me install. It seems you _must_ choose the partition first, then the path, if you do it the other way it doesn't work.
Seems to work for me now.