Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Tunes/24CountryDances_1804_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8247-24CountryDances_1804_Thompson.ps) >>/Users/jc/w/tmp/Tune-8247-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Tunes/24CountryDances_1804_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-8247-24CountryDances_1804_Thompson.abc 167 ABC music file with the extracted tune(s)
Tune-8247-24CountryDances_1804_Thompson.ps 6 PostScript
Tune-8247-24CountryDances_1804_Thompson.txt 167 Plain-text file with the extracted tune(s)
Tune-8247-get.log 4473 Log file, useful mostly for debugging
Tune-82473-24CountryDances_1808_Goulding.abc 168 ABC music file with the extracted tune(s)
Tune-82473-24CountryDances_1808_Goulding.txt 168 Plain-text file with the extracted tune(s)
Tune-82473-get.log 9375 Log file, useful mostly for debugging
Tune-82477-Wilson_Harmony_4NCD_1812_V2.abc 168 ABC music file with the extracted tune(s)
Tune-82477-Wilson_Harmony_4NCD_1812_V2.ps 6 PostScript
Tune-82477-Wilson_Harmony_4NCD_1812_V2.txt 168 Plain-text file with the extracted tune(s)
Tune-82477-get.log 4497 Log file, useful mostly for debugging
These files should be available for 24 hours.