pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1050-Lamplighters_H_G4.ps) >>/Users/jc/w/tmp/Tune-1050-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/hornpipe/Lamplighters_H_G4.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_10502.log 294164 Log file, useful mostly for debugging
Coll_10503.log 388300 Log file, useful mostly for debugging
Sess-10508.log 11421 Log file, useful mostly for debugging
Tune-1050-Lamplighters_H_G4.abc 606 ABC music file with the extracted tune(s)
Tune-1050-Lamplighters_H_G4.ps 35916 PostScript
Tune-1050-Lamplighters_H_G4.txt 606 Plain-text file with the extracted tune(s)
Tune-1050-get.log 9681 Log file, useful mostly for debugging
Tune-10501-get.log 4034 Log file, useful mostly for debugging
Tune-10502-get.log 4040 Log file, useful mostly for debugging
Tune-10503-get.log 4995 Log file, useful mostly for debugging
Tune-10504-get.log 5982 Log file, useful mostly for debugging
Tune-10506-get.log 4629 Log file, useful mostly for debugging
These files should be available for 24 hours.