pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6391-MaineMedley2p1.ps) >>/Users/jc/w/tmp/Tune-6391-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/MaineMedley2p1.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_63910.log 280115 Log file, useful mostly for debugging
Coll_63912.log 847370 Log file, useful mostly for debugging
Tune-6391-MaineMedley2p1.abc 2278 ABC music file with the extracted tune(s)
Tune-6391-MaineMedley2p1.ps 51078 PostScript
Tune-6391-MaineMedley2p1.txt 2278 Plain-text file with the extracted tune(s)
Tune-6391-get.log 4961 Log file, useful mostly for debugging
Tune-63914-_1.abc 0 ABC music file with the extracted tune(s)
Tune-63914-_1.txt 0 Plain-text file with the extracted tune(s)
Tune-63914-get.log 2924 Log file, useful mostly for debugging
These files should be available for 24 hours.