pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4279-251_MajorHedleysQuickMarch.ps) >>/Users/jc/w/tmp/Tune-4279-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/AbrahamMackintosh/251_MajorHedleysQuickMarch.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-4279-251_MajorHedleysQuickMarch.abc 1100 ABC music file with the extracted tune(s)
Tune-4279-251_MajorHedleysQuickMarch.ps 41449 PostScript
Tune-4279-251_MajorHedleysQuickMarch.txt 1100 Plain-text file with the extracted tune(s)
Tune-4279-get.log 4920 Log file, useful mostly for debugging
Tune-42797-get.log 5110 Log file, useful mostly for debugging
These files should be available for 24 hours.