Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1781/24CountryDances_1810_Button_Whitaker.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4555-24CountryDances_1810_Button_Whitaker.ps) >>/Users/jc/w/tmp/Tune-4555-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1781/24CountryDances_1810_Button_Whitaker.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-4555-24CountryDances_1810_Button_Whitaker.abc 173 ABC music file with the extracted tune(s)
Tune-4555-24CountryDances_1810_Button_Whitaker.ps 6 PostScript
Tune-4555-24CountryDances_1810_Button_Whitaker.txt 173 Plain-text file with the extracted tune(s)
Tune-4555-get.log 4608 Log file, useful mostly for debugging
Tune-45550-JohnFrench.abc 147 ABC music file with the extracted tune(s)
Tune-45550-JohnFrench.pdf 2217 Portable Data Format
Tune-45550-JohnFrench.ps 6 PostScript
Tune-45550-JohnFrench.txt 147 Plain-text file with the extracted tune(s)
Tune-45550-get.log 8349 Log file, useful mostly for debugging
Tune-45551-get.log 5546 Log file, useful mostly for debugging
Tune-45552-get.log 5423 Log file, useful mostly for debugging
Tune-45553-Gow-CSR4-abc2.abc 150 ABC music file with the extracted tune(s)
Tune-45553-Gow-CSR4-abc2.ps 6 PostScript
Tune-45553-Gow-CSR4-abc2.txt 150 Plain-text file with the extracted tune(s)
Tune-45553-get.log 4054 Log file, useful mostly for debugging
Tune-45558-get.log 4031 Log file, useful mostly for debugging
Tune-45559-get.log 5217 Log file, useful mostly for debugging
These files should be available for 24 hours.