pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6020-Banks_1.ps) >>/Users/jc/w/tmp/Tune-6020-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/hornpipe/Banks_1.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_60202.log 495080 Log file, useful mostly for debugging
Coll_60206.log 429048 Log file, useful mostly for debugging
Tune-6020-Banks_1.abc 564 ABC music file with the extracted tune(s)
Tune-6020-Banks_1.ps 37779 PostScript
Tune-6020-Banks_1.txt 564 Plain-text file with the extracted tune(s)
Tune-6020-get.log 5271 Log file, useful mostly for debugging
Tune-60201-get.log 4363 Log file, useful mostly for debugging
Tune-60204-get.log 3506 Log file, useful mostly for debugging
These files should be available for 24 hours.