pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-60707-Dougie_MacDonald.ps) >>/Users/jc/w/tmp/Tune-60707-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/by/Dougie_MacDonald.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_60707.log 639795 Log file, useful mostly for debugging
Tune-60707-Dougie_MacDonald.abc 16024 ABC music file with the extracted tune(s)
Tune-60707-Dougie_MacDonald.ps 210260 PostScript
Tune-60707-Dougie_MacDonald.txt 16024 Plain-text file with the extracted tune(s)
Tune-60707-get.log 19008 Log file, useful mostly for debugging
These files should be available for 24 hours.