Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/CPC/Hamilton_Kerr_MM2-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3231-Hamilton_Kerr_MM2-V2.ps) >>/Users/jc/w/tmp/Tune-3231-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/CPC/Hamilton_Kerr_MM2-V2.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-3231-Hamilton_Kerr_MM2-V2.abc 156 ABC music file with the extracted tune(s)
Tune-3231-Hamilton_Kerr_MM2-V2.ps 6 PostScript
Tune-3231-Hamilton_Kerr_MM2-V2.txt 156 Plain-text file with the extracted tune(s)
Tune-3231-get.log 8349 Log file, useful mostly for debugging
Tune-32310-get.log 5648 Log file, useful mostly for debugging
Tune-32311-get.log 4598 Log file, useful mostly for debugging
Tune-32313-get.log 8412 Log file, useful mostly for debugging
Tune-32314-get.log 5657 Log file, useful mostly for debugging
Tune-32315-get.log 10499 Log file, useful mostly for debugging
Tune-32316-get.log 19124 Log file, useful mostly for debugging
Tune-32317-get.log 3124 Log file, useful mostly for debugging
Tune-32318-get.log 3538 Log file, useful mostly for debugging
Tune-32319-get.log 4288 Log file, useful mostly for debugging
These files should be available for 24 hours.