pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6156-MacMahons_Hornpipe_1.ps) >>/Users/jc/w/tmp/Tune-6156-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Perron-Miller/MacMahons_Hornpipe_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
Tune-6156-MacMahons_Hornpipe_1.abc 526 ABC music file with the extracted tune(s)
Tune-6156-MacMahons_Hornpipe_1.ps 35294 PostScript
Tune-6156-MacMahons_Hornpipe_1.txt 526 Plain-text file with the extracted tune(s)
Tune-6156-get.log 5045 Log file, useful mostly for debugging
Tune-61562-get.log 1308 Log file, useful mostly for debugging
Tune-61566-get.log 1423 Log file, useful mostly for debugging
Tune-61567-Gow-CR-abc2.abc 147 ABC music file with the extracted tune(s)
Tune-61567-Gow-CR-abc2.pdf 2217 Portable Data Format
Tune-61567-Gow-CR-abc2.ps 6 PostScript
Tune-61567-Gow-CR-abc2.txt 147 Plain-text file with the extracted tune(s)
Tune-61567-get.log 6404 Log file, useful mostly for debugging
These files should be available for 24 hours.