pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8836-Petronella_set-D,G,A,Em-32-3.ps) >>/Users/jc/w/tmp/Tune-8836-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/NYE/reel/Petronella_set-D,G,A,Em-32-3.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
Tune-8836-Petronella_set-D,G,A,Em-32-3.abc 2214 ABC music file with the extracted tune(s)
Tune-8836-Petronella_set-D,G,A,Em-32-3.ps 48069 PostScript
Tune-8836-Petronella_set-D,G,A,Em-32-3.txt 2214 Plain-text file with the extracted tune(s)
Tune-8836-get.log 5265 Log file, useful mostly for debugging
Tune-88360-get.log 5232 Log file, useful mostly for debugging
Tune-88368-get.log 4335 Log file, useful mostly for debugging
These files should be available for 24 hours.