pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8042-AGR04.ps) >>/Users/jc/w/tmp/Tune-8042-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/AGR04.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_80422.log 564445 Log file, useful mostly for debugging
Coll_80424.log 292760 Log file, useful mostly for debugging
Tune-8042-AGR04.abc 2580 ABC music file with the extracted tune(s)
Tune-8042-AGR04.ps 45758 PostScript
Tune-8042-AGR04.txt 2580 Plain-text file with the extracted tune(s)
Tune-8042-get.log 4737 Log file, useful mostly for debugging
These files should be available for 24 hours.