pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7577-alltunes.ps) >>/Users/jc/w/tmp/Tune-7577-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CCD/alltunes.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_75772.log 264661 Log file, useful mostly for debugging
Coll_75777.log 147320 Log file, useful mostly for debugging
Form_7577.log 810 Log file, useful mostly for debugging
Tune-7577-alltunes.abc 155543 ABC music file with the extracted tune(s)
Tune-7577-alltunes.ps 818650 PostScript
Tune-7577-alltunes.txt 155543 Plain-text file with the extracted tune(s)
Tune-7577-get.log 73204 Log file, useful mostly for debugging
Tune-75771-get.log 6299 Log file, useful mostly for debugging
Tune-75773-get.log 7044 Log file, useful mostly for debugging
Tune-75775-get.log 4409 Log file, useful mostly for debugging
Tune-75777-get.log 8811 Log file, useful mostly for debugging
These files should be available for 24 hours.