Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MMM2/HillCountryTunes.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7659-HillCountryTunes.ps) >>/Users/jc/w/tmp/Tune-7659-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MMM2/HillCountryTunes.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_76598.log 527012 Log file, useful mostly for debugging
Tune-7659-HillCountryTunes.abc 153 ABC music file with the extracted tune(s)
Tune-7659-HillCountryTunes.ps 6 PostScript
Tune-7659-HillCountryTunes.txt 153 Plain-text file with the extracted tune(s)
Tune-7659-get.log 4190 Log file, useful mostly for debugging
Tune-76590-24FavouriteDances_1784_Straight.abc 170 ABC music file with the extracted tune(s)
Tune-76590-24FavouriteDances_1784_Straight.ps 6 PostScript
Tune-76590-24FavouriteDances_1784_Straight.txt 170 Plain-text file with the extracted tune(s)
Tune-76590-get.log 4567 Log file, useful mostly for debugging
Tune-76592-get.log 4259 Log file, useful mostly for debugging
Tune-76594-get.log 3400 Log file, useful mostly for debugging
Tune-76595-24FavouriteDances_1784_Straight.abc 170 ABC music file with the extracted tune(s)
Tune-76595-24FavouriteDances_1784_Straight.ps 6 PostScript
Tune-76595-24FavouriteDances_1784_Straight.txt 170 Plain-text file with the extracted tune(s)
Tune-76595-get.log 8973 Log file, useful mostly for debugging
Tune-76598-SCD_RoyGoldring_14SocialDancesFor2000.abc 178 ABC music file with the extracted tune(s)
Tune-76598-SCD_RoyGoldring_14SocialDancesFor2000.txt 178 Plain-text file with the extracted tune(s)
Tune-76598-get.log 3696 Log file, useful mostly for debugging
Tune-76599-get.log 3084 Log file, useful mostly for debugging
These files should be available for 24 hours.