Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1766/24CountryDances_1778_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9592-24CountryDances_1778_Thompson.ps) >>/Users/jc/w/tmp/Tune-9592-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1766/24CountryDances_1778_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
Tune-9592-24CountryDances_1778_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-9592-24CountryDances_1778_Thompson.ps 6 PostScript
Tune-9592-24CountryDances_1778_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-9592-get.log 4459 Log file, useful mostly for debugging
Tune-95922-Gow-CSR3-abc2.abc 150 ABC music file with the extracted tune(s)
Tune-95922-Gow-CSR3-abc2.pdf 2217 Portable Data Format
Tune-95922-Gow-CSR3-abc2.ps 6 PostScript
Tune-95922-Gow-CSR3-abc2.txt 150 Plain-text file with the extracted tune(s)
Tune-95922-get.log 6251 Log file, useful mostly for debugging
Tune-95923-get.log 3328 Log file, useful mostly for debugging
Tune-95924-get.log 4992 Log file, useful mostly for debugging
Tune-95926-get.log 1436 Log file, useful mostly for debugging
These files should be available for 24 hours.