i encountered the same problem. I installed unison-gtk via Synaptic. Local syncing works, but remote syncing fails, because unison-gtk on "source" machine wants to call unison on "target", not unison-gtk. Manually installing unison with apt-get helps, of course, but it takes a while to figure that out.
-- unison-gtk should depend on unison https://launchpad.net/bugs/49468 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs