Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1791/24CountryDances_1812_JGray.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9187-24CountryDances_1812_JGray.ps) >>/Users/jc/w/tmp/Tune-9187-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1791/24CountryDances_1812_JGray.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-9187-24CountryDances_1812_JGray.abc 163 ABC music file with the extracted tune(s)
Tune-9187-24CountryDances_1812_JGray.ps 6 PostScript
Tune-9187-24CountryDances_1812_JGray.txt 163 Plain-text file with the extracted tune(s)
Tune-9187-get.log 4404 Log file, useful mostly for debugging
Tune-91872-EliasHowe_MusiciansCompanionP3-1844-V2.abc 174 ABC music file with the extracted tune(s)
Tune-91872-EliasHowe_MusiciansCompanionP3-1844-V2.ps 6 PostScript
Tune-91872-EliasHowe_MusiciansCompanionP3-1844-V2.txt 174 Plain-text file with the extracted tune(s)
Tune-91872-get.log 4577 Log file, useful mostly for debugging
Tune-91877-get.log 4547 Log file, useful mostly for debugging
These files should be available for 24 hours.