pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6377-JackBrokeDaPrisonDoor.ps) >>/Users/jc/w/tmp/Tune-6377-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/JackBrokeDaPrisonDoor.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Coll_63774.log 514750 Log file, useful mostly for debugging
Coll_63775.log 655250 Log file, useful mostly for debugging
Tune-6377-JackBrokeDaPrisonDoor.abc 467 ABC music file with the extracted tune(s)
Tune-6377-JackBrokeDaPrisonDoor.ps 33443 PostScript
Tune-6377-JackBrokeDaPrisonDoor.txt 467 Plain-text file with the extracted tune(s)
Tune-6377-get.log 4722 Log file, useful mostly for debugging
Tune-63770-get.log 1394 Log file, useful mostly for debugging
Tune-63774-get.log 4423 Log file, useful mostly for debugging
Tune-63775-get.log 4739 Log file, useful mostly for debugging
These files should be available for 24 hours.