pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-63990-4162.ps) >>/Users/jc/w/tmp/Tune-63990-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow/CR/4162=Miss_McLeods_Favorite-abc2.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-63990-4162.abc 1276 ABC music file with the extracted tune(s)
Tune-63990-4162.ps 41864 PostScript
Tune-63990-4162.txt 1276 Plain-text file with the extracted tune(s)
Tune-63990-get.log 4848 Log file, useful mostly for debugging
These files should be available for 24 hours.