pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7220-MacArthur_Road-E,D-32-5.ps) >>/Users/jc/w/tmp/Tune-7220-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/FiddleHell/reel/MacArthur_Road-E,D-32-5.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-7220-MacArthur_Road-E,D-32-5.abc 650 ABC music file with the extracted tune(s)
Tune-7220-MacArthur_Road-E,D-32-5.ps 37525 PostScript
Tune-7220-MacArthur_Road-E,D-32-5.txt 650 Plain-text file with the extracted tune(s)
Tune-7220-get.log 5320 Log file, useful mostly for debugging
Tune-72201-get.log 5291 Log file, useful mostly for debugging
These files should be available for 24 hours.