Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book25/24CountryDances_1776_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1495-24CountryDances_1776_Thompson.ps) >>/Users/jc/w/tmp/Tune-1495-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book25/24CountryDances_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_14950.log 875612 Log file, useful mostly for debugging
Coll_14954.log 506011 Log file, useful mostly for debugging
Tune-1495-24CountryDances_1776_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-1495-24CountryDances_1776_Thompson.ps 6 PostScript
Tune-1495-24CountryDances_1776_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-1495-get.log 4475 Log file, useful mostly for debugging
Tune-14950-get.log 10912 Log file, useful mostly for debugging
Tune-14952-get.log 8145 Log file, useful mostly for debugging
Tune-14953-get.log 7558 Log file, useful mostly for debugging
Tune-14955-get.log 4563 Log file, useful mostly for debugging
Tune-14958-get.log 3904 Log file, useful mostly for debugging
These files should be available for 24 hours.