pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9318-WindingRoad1.ps) >>/Users/jc/w/tmp/Tune-9318-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/WindingRoad1.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Find_93181.log 1499 Log file, useful mostly for debugging
Form_93186.log 880 Log file, useful mostly for debugging
Form_93188.log 868 Log file, useful mostly for debugging
Tune-9318-WindingRoad1.abc 0 ABC music file with the extracted tune(s)
Tune-9318-WindingRoad1.ps 0 PostScript
Tune-9318-WindingRoad1.txt 0 Plain-text file with the extracted tune(s)
Tune-9318-get.log 4095 Log file, useful mostly for debugging
Tune-93180-get.log 8187 Log file, useful mostly for debugging
Tune-93183-Kerr_MM3-V1.abc 388 ABC music file with the extracted tune(s)
Tune-93183-Kerr_MM3-V1.txt 388 Plain-text file with the extracted tune(s)
Tune-93183-get.log 3124 Log file, useful mostly for debugging
Tune-93184-get.log 8040 Log file, useful mostly for debugging
Tune-93185-get.log 5499 Log file, useful mostly for debugging
Tune-93186-get.log 3224 Log file, useful mostly for debugging
These files should be available for 24 hours.