It will be very useful to see the error message.
It's also not clear what scheduler you are using -- is this a local scheduler, MJS, etc? I'm also assuming that when you say "11 physical processors" you mean 11 nodes in the cluster with 126 GiB each?
My initial hunch is that you are hitting some limit set in the user environment -- something like file handles, RAM, vmem size, etc. In addition to the actual error message it might be useful to see the output of the shell command "ulimit -a" or "limit", depending on what your system uses.
In my experience it's usually been that the "descriptors" is set too low, and it needs to be increased.
You could also be running out of communications ports or hitting a communications error if you have firewalls set up (and are using Parallel Server)