pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-60685-115201_Miss_Stewart.ps) >>/Users/jc/w/tmp/Tune-60685-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM1/115201_Miss_Stewart.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-60685-115201_Miss_Stewart.abc 549 ABC music file with the extracted tune(s)
Tune-60685-115201_Miss_Stewart.ps 37087 PostScript
Tune-60685-115201_Miss_Stewart.txt 549 Plain-text file with the extracted tune(s)
Tune-60685-get.log 4760 Log file, useful mostly for debugging
These files should be available for 24 hours.