pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-57128-096_Mount_Sion.ps) >>/Users/jc/w/tmp/Tune-57128-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Straight_Skillern/096_Mount_Sion.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_57128.log 1027554 Log file, useful mostly for debugging
Tune-57128-096_Mount_Sion.abc 891 ABC music file with the extracted tune(s)
Tune-57128-096_Mount_Sion.ps 34516 PostScript
Tune-57128-096_Mount_Sion.txt 891 Plain-text file with the extracted tune(s)
Tune-57128-get.log 4602 Log file, useful mostly for debugging
These files should be available for 24 hours.