Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/HC2009/24CountryDances_1776_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3021-24CountryDances_1776_Thompson.ps) >>/Users/jc/w/tmp/Tune-3021-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/HC2009/24CountryDances_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_30217.log 541012 Log file, useful mostly for debugging
Tune-3021-24CountryDances_1776_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-3021-24CountryDances_1776_Thompson.ps 6 PostScript
Tune-3021-24CountryDances_1776_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-3021-get.log 8958 Log file, useful mostly for debugging
Tune-30211-get.log 10223 Log file, useful mostly for debugging
Tune-30212-get.log 10482 Log file, useful mostly for debugging
Tune-30213-get.log 3610 Log file, useful mostly for debugging
Tune-30214-get.log 16962 Log file, useful mostly for debugging
Tune-30216-get.log 8427 Log file, useful mostly for debugging
These files should be available for 24 hours.