pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4617-20501_Bricklayers_Hornpipe.ps) >>/Users/jc/w/tmp/Tune-4617-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/20501_Bricklayers_Hornpipe.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_46176.log 146675 Log file, useful mostly for debugging
Tune-4617-20501_Bricklayers_Hornpipe.abc 1193 ABC music file with the extracted tune(s)
Tune-4617-20501_Bricklayers_Hornpipe.ps 43503 PostScript
Tune-4617-20501_Bricklayers_Hornpipe.txt 1193 Plain-text file with the extracted tune(s)
Tune-4617-get.log 6536 Log file, useful mostly for debugging
Tune-46174-get.log 5257 Log file, useful mostly for debugging
Tune-46175-24CountryDances_1799_Preston.abc 165 ABC music file with the extracted tune(s)
Tune-46175-24CountryDances_1799_Preston.pdf 2217 Portable Data Format
Tune-46175-24CountryDances_1799_Preston.ps 6 PostScript
Tune-46175-24CountryDances_1799_Preston.txt 165 Plain-text file with the extracted tune(s)
Tune-46175-get.log 9528 Log file, useful mostly for debugging
These files should be available for 24 hours.