pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-51839-20901_Cinderella_Sett_tune_1.ps) >>/Users/jc/w/tmp/Tune-51839-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/20901_Cinderella_Sett_tune_1.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_51839.log 293212 Log file, useful mostly for debugging
Tune-51839-20901_Cinderella_Sett_tune_1.abc 1000 ABC music file with the extracted tune(s)
Tune-51839-20901_Cinderella_Sett_tune_1.ps 35151 PostScript
Tune-51839-20901_Cinderella_Sett_tune_1.txt 1000 Plain-text file with the extracted tune(s)
Tune-51839-get.log 5101 Log file, useful mostly for debugging
These files should be available for 24 hours.