Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book02/24CountryDances_1780_Skillern.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3363-24CountryDances_1780_Skillern.ps) >>/Users/jc/w/tmp/Tune-3363-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book02/24CountryDances_1780_Skillern.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_33630.log 689412 Log file, useful mostly for debugging
Tune-3363-24CountryDances_1780_Skillern.abc 168 ABC music file with the extracted tune(s)
Tune-3363-24CountryDances_1780_Skillern.ps 6 PostScript
Tune-3363-24CountryDances_1780_Skillern.txt 168 Plain-text file with the extracted tune(s)
Tune-3363-get.log 4473 Log file, useful mostly for debugging
Tune-33630-24FavouriteDances_1779_Straight.abc 166 ABC music file with the extracted tune(s)
Tune-33630-24FavouriteDances_1779_Straight.txt 166 Plain-text file with the extracted tune(s)
Tune-33630-get.log 13262 Log file, useful mostly for debugging
Tune-33631-get.log 54899 Log file, useful mostly for debugging
Tune-33633-get.log 20737 Log file, useful mostly for debugging
Tune-33635-get.log 4451 Log file, useful mostly for debugging
Tune-33637-get.log 3208 Log file, useful mostly for debugging
Tune-33638-get.log 166055 Log file, useful mostly for debugging
Tune-33639-get.log 8114 Log file, useful mostly for debugging
These files should be available for 24 hours.