it currently works only in ~progres.
i will consider changing this in the future.
so, at the moment you can solve in 2 ways
- use a frame or iframe
- use ajax
in the new template i'm building i have the same problem, and i use ajax.
P.S.
oh, i see you found the solution while i was writing
are you sure the iframe is accessed as the same IP address?
example. you may be working locally, access your hfs by localhost/127.0.0.1 and making your iframe load from 192.168.0.1
that would not work. your iframe shoulod point to "/~progress".
HFS lets you list transfers only from YOUR address, for privacy.