pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-62688-AGW07.ps) >>/Users/jc/w/tmp/Tune-62688-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/AGW07.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_62688.log 1593050 Log file, useful mostly for debugging
Tune-62688-AGW07.abc 1922 ABC music file with the extracted tune(s)
Tune-62688-AGW07.ps 45039 PostScript
Tune-62688-AGW07.txt 1922 Plain-text file with the extracted tune(s)
Tune-62688-get.log 6116 Log file, useful mostly for debugging
These files should be available for 24 hours.