pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2151-AGW01.ps) >>/Users/jc/w/tmp/Tune-2151-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/AGW01.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_2151.log 1320143 Log file, useful mostly for debugging
Coll_21511.log 564445 Log file, useful mostly for debugging
Tune-2151-AGW01.abc 2910 ABC music file with the extracted tune(s)
Tune-2151-AGW01.ps 57276 PostScript
Tune-2151-AGW01.txt 2910 Plain-text file with the extracted tune(s)
Tune-2151-get.log 4316 Log file, useful mostly for debugging
These files should be available for 24 hours.