[PyMOL] pymol locks up - unix pipe

[Douglas Kojetin]

Hi All-

I'm using PyMOL through a UNIX pipe within a Tcl/Tk script interface.  
The script make calls to highlight certain residues, and it also uses 
the 'dist' command.  After the script makes a a few calls (>20) to 
PyMOL, my PyMOL session usually locks up.

Anyone know what might be going on?  Or what I can do to resolve the 
issue?

Thanks,
Doug