pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8490-Amelia.ps) >>/Users/jc/w/tmp/Tune-8490-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/LM/Amelia.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_84902.log 459808 Log file, useful mostly for debugging
Coll_84903.log 348546 Log file, useful mostly for debugging
Coll_84904.log 732020 Log file, useful mostly for debugging
Tune-8490-Amelia.abc 972 ABC music file with the extracted tune(s)
Tune-8490-Amelia.ps 35048 PostScript
Tune-8490-Amelia.txt 972 Plain-text file with the extracted tune(s)
Tune-8490-get.log 4249 Log file, useful mostly for debugging
Tune-84904-get.log 50194 Log file, useful mostly for debugging
Tune-84907-get.log 2982 Log file, useful mostly for debugging
These files should be available for 24 hours.