pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4027-2114_the_Duchess_of_Hamilton.ps) >>/Users/jc/w/tmp/Tune-4027-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM2/2114_the_Duchess_of_Hamilton.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_40270.log 282925 Log file, useful mostly for debugging
Coll_40272.log 281520 Log file, useful mostly for debugging
Tune-4027-2114_the_Duchess_of_Hamilton.abc 533 ABC music file with the extracted tune(s)
Tune-4027-2114_the_Duchess_of_Hamilton.ps 35947 PostScript
Tune-4027-2114_the_Duchess_of_Hamilton.txt 533 Plain-text file with the extracted tune(s)
Tune-4027-get.log 4932 Log file, useful mostly for debugging
These files should be available for 24 hours.