Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1794/OldEnglishCountryDances.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8909-OldEnglishCountryDances.ps) >>/Users/jc/w/tmp/Tune-8909-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1794/OldEnglishCountryDances.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-8909-OldEnglishCountryDances.abc 160 ABC music file with the extracted tune(s)
Tune-8909-OldEnglishCountryDances.ps 6 PostScript
Tune-8909-OldEnglishCountryDances.txt 160 Plain-text file with the extracted tune(s)
Tune-8909-get.log 14427 Log file, useful mostly for debugging
Tune-89090-get.log 4385 Log file, useful mostly for debugging
Tune-89094-get.log 14787 Log file, useful mostly for debugging
Tune-89095-get.log 6908 Log file, useful mostly for debugging
Tune-89098-get.log 6942 Log file, useful mostly for debugging
Tune-89099-get.log 3160 Log file, useful mostly for debugging
These files should be available for 24 hours.