pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8908-10751_FURIOSO_GALLOP.ps) >>/Users/jc/w/tmp/Tune-8908-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/10751_FURIOSO_GALLOP.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_89080.log 264661 Log file, useful mostly for debugging
Coll_89084.log 278712 Log file, useful mostly for debugging
Coll_89089.log 266067 Log file, useful mostly for debugging
Form_8908.log 834 Log file, useful mostly for debugging
Form_89083.log 821 Log file, useful mostly for debugging
Form_89085.log 966 Log file, useful mostly for debugging
Form_89089.log 821 Log file, useful mostly for debugging
Tune-8908-10751_FURIOSO_GALLOP.abc 820 ABC music file with the extracted tune(s)
Tune-8908-10751_FURIOSO_GALLOP.ps 41066 PostScript
Tune-8908-10751_FURIOSO_GALLOP.txt 820 Plain-text file with the extracted tune(s)
Tune-8908-get.log 10343 Log file, useful mostly for debugging
Tune-89086-get.log 1488 Log file, useful mostly for debugging
These files should be available for 24 hours.