Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book01/24CountryDances_1776_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2817-24CountryDances_1776_Thompson.ps) >>/Users/jc/w/tmp/Tune-2817-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book01/24CountryDances_1776_Thompson.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_28170.log 826373 Log file, useful mostly for debugging
Coll_28178.log 716011 Log file, useful mostly for debugging
Tune-2817-24CountryDances_1776_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-2817-24CountryDances_1776_Thompson.ps 6 PostScript
Tune-2817-24CountryDances_1776_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-2817-get.log 17079 Log file, useful mostly for debugging
Tune-28171-get.log 8858 Log file, useful mostly for debugging
Tune-28172-get.log 3322 Log file, useful mostly for debugging
Tune-28173-get.log 12844 Log file, useful mostly for debugging
Tune-28174-get.log 9239 Log file, useful mostly for debugging
Tune-28175-get.log 7729 Log file, useful mostly for debugging
Tune-28178-get.log 4751 Log file, useful mostly for debugging
These files should be available for 24 hours.