pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4533-30193-Liberty_March-V1.ps) >>/Users/jc/w/tmp/Tune-4533-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP3/30193-Liberty_March-V1.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_45332.log 447210 Log file, useful mostly for debugging
Coll_45333.log 457008 Log file, useful mostly for debugging
Coll_45335.log 451408 Log file, useful mostly for debugging
Form_4533.log 1961 Log file, useful mostly for debugging
Form_45334.log 1024 Log file, useful mostly for debugging
Tune-4533-30193-Liberty_March-V1.abc 898 ABC music file with the extracted tune(s)
Tune-4533-30193-Liberty_March-V1.ps 36329 PostScript
Tune-4533-30193-Liberty_March-V1.txt 898 Plain-text file with the extracted tune(s)
Tune-4533-get.log 5005 Log file, useful mostly for debugging
Tune-45331-get.log 1628 Log file, useful mostly for debugging
These files should be available for 24 hours.