pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8854-SocietyPiper.ps) >>/Users/jc/w/tmp/Tune-8854-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/SocietyPiper.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
Coll_88547.log 340383 Log file, useful mostly for debugging
Form_88541.log 746 Log file, useful mostly for debugging
Form_88549.log 788 Log file, useful mostly for debugging
Tune-8854-SocietyPiper.abc 745 ABC music file with the extracted tune(s)
Tune-8854-SocietyPiper.ps 39080 PostScript
Tune-8854-SocietyPiper.txt 745 Plain-text file with the extracted tune(s)
Tune-8854-get.log 4273 Log file, useful mostly for debugging
Tune-88542-get.log 2966 Log file, useful mostly for debugging
Tune-88543-get.log 4199 Log file, useful mostly for debugging
Tune-88544-get.log 5632 Log file, useful mostly for debugging
Tune-88545-get.log 9749 Log file, useful mostly for debugging
These files should be available for 24 hours.