does png output from gnuplot require X11

[Lenore Horner]

I have gnuplot (just updated) installed on an Intel machine using X11  
and on a G4 where I'm not using X11.  In both cases, exporting to png  
causes a can't find fonts warning.  In addition, on the G4/no-X11  
installation, running gnuplot on a file setting terminal to png  
creates a screen full of weird symbols and no png file.  On the Intel/ 
X11 installation, I have no trouble creating png files.

Lenore