pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2605-Monarchs.ps) >>/Users/jc/w/tmp/Tune-2605-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/Monarchs.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_26054.log 268875 Log file, useful mostly for debugging
Coll_26055.log 289950 Log file, useful mostly for debugging
Tune-2605-Monarchs.abc 2176 ABC music file with the extracted tune(s)
Tune-2605-Monarchs.ps 53040 PostScript
Tune-2605-Monarchs.txt 2176 Plain-text file with the extracted tune(s)
Tune-2605-get.log 4741 Log file, useful mostly for debugging
These files should be available for 24 hours.