pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-51230-Grimstock_G.ps) >>/Users/jc/w/tmp/Tune-51230-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/500/Grimstock_G.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-51230-Grimstock_G.abc 365 ABC music file with the extracted tune(s)
Tune-51230-Grimstock_G.ps 33592 PostScript
Tune-51230-Grimstock_G.txt 365 Plain-text file with the extracted tune(s)
Tune-51230-dance.abc 140 ABC music file with the extracted tune(s)
Tune-51230-dance.txt 140 Plain-text file with the extracted tune(s)
Tune-51230-get.log 12223 Log file, useful mostly for debugging
These files should be available for 24 hours.