Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1758/CaledonianCountryDances.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7532-CaledonianCountryDances.ps) >>/Users/jc/w/tmp/Tune-7532-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1758/CaledonianCountryDances.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-7532-CaledonianCountryDances.abc 160 ABC music file with the extracted tune(s)
Tune-7532-CaledonianCountryDances.ps 6 PostScript
Tune-7532-CaledonianCountryDances.txt 160 Plain-text file with the extracted tune(s)
Tune-7532-get.log 4337 Log file, useful mostly for debugging
Tune-75320-get.log 9742 Log file, useful mostly for debugging
Tune-75321-get.log 1400 Log file, useful mostly for debugging
Tune-75322-get.log 10622 Log file, useful mostly for debugging
Tune-75323-get.log 5398 Log file, useful mostly for debugging
Tune-75324-get.log 10392 Log file, useful mostly for debugging
Tune-75325-get.log 1389 Log file, useful mostly for debugging
Tune-75326-get.log 3474 Log file, useful mostly for debugging
Tune-75327-get.log 3948 Log file, useful mostly for debugging
Tune-75329-get.log 6897 Log file, useful mostly for debugging
These files should be available for 24 hours.