Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/GftF/HillCountryTunes.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3358-HillCountryTunes.ps) >>/Users/jc/w/tmp/Tune-3358-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/GftF/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_33586.log 294165 Log file, useful mostly for debugging
Tune-3358-HillCountryTunes.abc 153 ABC music file with the extracted tune(s)
Tune-3358-HillCountryTunes.ps 6 PostScript
Tune-3358-HillCountryTunes.txt 153 Plain-text file with the extracted tune(s)
Tune-3358-get.log 4192 Log file, useful mostly for debugging
Tune-33581-get.log 1403 Log file, useful mostly for debugging
Tune-33582-get.log 1400 Log file, useful mostly for debugging
Tune-33583-get.log 63869 Log file, useful mostly for debugging
Tune-33584-get.log 5124 Log file, useful mostly for debugging
Tune-33586-get.log 1400 Log file, useful mostly for debugging
These files should be available for 24 hours.