Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/D78/24CountryDances_1766_Johnson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5338-24CountryDances_1766_Johnson.ps) >>/Users/jc/w/tmp/Tune-5338-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/D78/24CountryDances_1766_Johnson.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_53387.log 1293981 Log file, useful mostly for debugging
Tune-5338-24CountryDances_1766_Johnson.abc 164 ABC music file with the extracted tune(s)
Tune-5338-24CountryDances_1766_Johnson.ps 6 PostScript
Tune-5338-24CountryDances_1766_Johnson.txt 164 Plain-text file with the extracted tune(s)
Tune-5338-get.log 4438 Log file, useful mostly for debugging
Tune-53386-get.log 5813 Log file, useful mostly for debugging
Tune-53387-get.log 1440 Log file, useful mostly for debugging
Tune-53388-HaandMeDoonDaFiddle.abc 168 ABC music file with the extracted tune(s)
Tune-53388-HaandMeDoonDaFiddle.pdf 2217 Portable Data Format
Tune-53388-HaandMeDoonDaFiddle.ps 6 PostScript
Tune-53388-HaandMeDoonDaFiddle.txt 168 Plain-text file with the extracted tune(s)
Tune-53388-get.log 5219 Log file, useful mostly for debugging
These files should be available for 24 hours.