pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4235-ScotchmansDanceTheinTheNorthernLass_PLFD1687_288.ps) >>/Users/jc/w/tmp/Tune-4235-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/ScotchmansDanceTheinTheNorthernLass_PLFD1687_288.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-4235-ScotchmansDanceTheinTheNorthernLass_PLFD1687_288.abc 698 ABC music file with the extracted tune(s)
Tune-4235-ScotchmansDanceTheinTheNorthernLass_PLFD1687_288.ps 37345 PostScript
Tune-4235-ScotchmansDanceTheinTheNorthernLass_PLFD1687_288.txt 698 Plain-text file with the extracted tune(s)
Tune-4235-get.log 6214 Log file, useful mostly for debugging
Tune-42352-get.log 1545 Log file, useful mostly for debugging
Tune-42354-get.log 3260 Log file, useful mostly for debugging
Tune-42356-get.log 15078 Log file, useful mostly for debugging
These files should be available for 24 hours.