pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-77816-30404_Masons_Laddie.ps) >>/Users/jc/w/tmp/Tune-77816-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP3/30404_Masons_Laddie.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_77816.log 990 Log file, useful mostly for debugging
Tune-77816-30404_Masons_Laddie.abc 831 ABC music file with the extracted tune(s)
Tune-77816-30404_Masons_Laddie.ps 36426 PostScript
Tune-77816-30404_Masons_Laddie.txt 831 Plain-text file with the extracted tune(s)
Tune-77816-get.log 5588 Log file, useful mostly for debugging
These files should be available for 24 hours.