gnuplot png

[Lenore Horner]

I have gnuplot installed on two machines:
G4 10.5.7 making everything not use x11
Intel 10.5.7

On the second machine I can create png plots with gnuplot.  On the  
first the same command causes gibberish (symbols) to be spewed out in  
the command line and no png file to be created.   I assume disabling  
x11 has somehow mangled png output, but I don't know why or how to fix  
it.   Does anyone have any clue?

Lenore