Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1779/24CountryDances_1776_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3467-24CountryDances_1776_Thompson.ps) >>/Users/jc/w/tmp/Tune-3467-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1779/24CountryDances_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_34679.log 651036 Log file, useful mostly for debugging
Form_34670.log 839 Log file, useful mostly for debugging
Tune-3467-24CountryDances_1776_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-3467-24CountryDances_1776_Thompson.ps 6 PostScript
Tune-3467-24CountryDances_1776_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-3467-get.log 9953 Log file, useful mostly for debugging
Tune-34670-EliasHowe_MusiciansCompanionP1-1842-V1.abc 175 ABC music file with the extracted tune(s)
Tune-34670-EliasHowe_MusiciansCompanionP1-1842-V1.pdf 2217 Portable Data Format
Tune-34670-EliasHowe_MusiciansCompanionP1-1842-V1.ps 6 PostScript
Tune-34670-EliasHowe_MusiciansCompanionP1-1842-V1.txt 175 Plain-text file with the extracted tune(s)
Tune-34670-get.log 5694 Log file, useful mostly for debugging
Tune-34675-get.log 5295 Log file, useful mostly for debugging
Tune-34677-get.log 5895 Log file, useful mostly for debugging
Tune-34679-get.log 4961 Log file, useful mostly for debugging
These files should be available for 24 hours.