pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-16176-10401_The_Mansion_of_Peace.ps) >>/Users/jc/w/tmp/Tune-16176-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MoF/10401_The_Mansion_of_Peace.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-16176-10401_The_Mansion_of_Peace.abc 1535 ABC music file with the extracted tune(s)
Tune-16176-10401_The_Mansion_of_Peace.ps 38703 PostScript
Tune-16176-10401_The_Mansion_of_Peace.txt 1535 Plain-text file with the extracted tune(s)
Tune-16176-get.log 4802 Log file, useful mostly for debugging
These files should be available for 24 hours.