pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6800-BuenaVistaHornpipe.ps) >>/Users/jc/w/tmp/Tune-6800-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ryan-cole/Tunes/BuenaVistaHornpipe.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-6800-BuenaVistaHornpipe.abc 372 ABC music file with the extracted tune(s)
Tune-6800-BuenaVistaHornpipe.ps 36062 PostScript
Tune-6800-BuenaVistaHornpipe.txt 372 Plain-text file with the extracted tune(s)
Tune-6800-get.log 4700 Log file, useful mostly for debugging
Tune-68000-get.log 48059 Log file, useful mostly for debugging
Tune-68001-21372_Hurricane_Sett_tune_5-001.svg 27319 Scalable Vector Graphics format
Tune-68001-21372_Hurricane_Sett_tune_5.abc 1217 ABC music file with the extracted tune(s)
Tune-68001-21372_Hurricane_Sett_tune_5.txt 1217 Plain-text file with the extracted tune(s)
Tune-68001-get.log 4711 Log file, useful mostly for debugging
Tune-68005-get.log 41912 Log file, useful mostly for debugging
Tune-68007-get.log 13336 Log file, useful mostly for debugging
Tune-68008-get.log 4529 Log file, useful mostly for debugging
Tune-68009-get.log 4395 Log file, useful mostly for debugging
These files should be available for 24 hours.