pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5260-BonnyBonnyBroome.ps) >>/Users/jc/w/tmp/Tune-5260-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/BonnyBonnyBroome.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-5260-BonnyBonnyBroome.abc 825 ABC music file with the extracted tune(s)
Tune-5260-BonnyBonnyBroome.ps 32280 PostScript
Tune-5260-BonnyBonnyBroome.txt 825 Plain-text file with the extracted tune(s)
Tune-5260-get.log 6253 Log file, useful mostly for debugging
Tune-52600-CountryCollThe_PLFD1651_018-001.svg 8978 Scalable Vector Graphics format
Tune-52600-CountryCollThe_PLFD1651_018.abc 356 ABC music file with the extracted tune(s)
Tune-52600-CountryCollThe_PLFD1651_018.txt 356 Plain-text file with the extracted tune(s)
Tune-52600-get.log 5197 Log file, useful mostly for debugging
Tune-52608-get.log 1401 Log file, useful mostly for debugging
These files should be available for 24 hours.