Jesus was using the COMSOL GUI installed on login64 but it would error-out when invoked over an ssh session from a Macintosh machine.
From Dustin Graham, Thu Aug 7 12:34:02 2008 Subject: TicketID#20080807112123
Are you using X11.app? It must be running for X programs to display on a Macintosh. You might also have better luck with `ssh -Y login64` -- I have had to use '-Y' on Macs before myself.
From Joel Eidsath, Thu Aug 7 15:09:06 2008
If you're running a Mac, then the X11.app part is also necessary. OS X won't act as an X windows client without it.
You don't need it (the -Y option) on Linux, but X11.app sometimes does.
From Jesus Gomez, Fri Aug 8 10:11:09 2008
Thanks a lot for your help. When I use -Y it loads much faster.