Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1791/Goulding_TwentyFourCountryDancesForTheYear1808.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2467-Goulding_TwentyFourCountryDancesForTheYear1808.ps) >>/Users/jc/w/tmp/Tune-2467-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1791/Goulding_TwentyFourCountryDancesForTheYear1808.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-2467-Goulding_TwentyFourCountryDancesForTheYear1808.abc 183 ABC music file with the extracted tune(s)
Tune-2467-Goulding_TwentyFourCountryDancesForTheYear1808.ps 6 PostScript
Tune-2467-Goulding_TwentyFourCountryDancesForTheYear1808.txt 183 Plain-text file with the extracted tune(s)
Tune-2467-get.log 4820 Log file, useful mostly for debugging
Tune-24676-Pringle.abc 144 ABC music file with the extracted tune(s)
Tune-24676-Pringle.pdf 2217 Portable Data Format
Tune-24676-Pringle.ps 6 PostScript
Tune-24676-Pringle.txt 144 Plain-text file with the extracted tune(s)
Tune-24676-get.log 4791 Log file, useful mostly for debugging
Tune-24678-get.log 4404 Log file, useful mostly for debugging
These files should be available for 24 hours.