pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-63311-058_Maccarony.ps) >>/Users/jc/w/tmp/Tune-63311-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Straight_Skillern/058_Maccarony.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-63311-058_Maccarony.abc 682 ABC music file with the extracted tune(s)
Tune-63311-058_Maccarony.ps 33503 PostScript
Tune-63311-058_Maccarony.txt 682 Plain-text file with the extracted tune(s)
Tune-63311-get.log 11123 Log file, useful mostly for debugging
These files should be available for 24 hours.