pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7279-Fiddle_Faddle.ps) >>/Users/jc/w/tmp/Tune-7279-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CCD/Fiddle_Faddle.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_72797.log 261851 Log file, useful mostly for debugging
Form_72792.log 1672 Log file, useful mostly for debugging
Form_72796.log 822 Log file, useful mostly for debugging
Tune-7279-Fiddle_Faddle.abc 1684 ABC music file with the extracted tune(s)
Tune-7279-Fiddle_Faddle.ps 39409 PostScript
Tune-7279-Fiddle_Faddle.txt 1684 Plain-text file with the extracted tune(s)
Tune-7279-get.log 8060 Log file, useful mostly for debugging
Tune-72793-get.log 7081 Log file, useful mostly for debugging
Tune-72795-get.log 3644 Log file, useful mostly for debugging
These files should be available for 24 hours.