Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MM1/24CountryDances_1794_Preston.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6064-24CountryDances_1794_Preston.ps) >>/Users/jc/w/tmp/Tune-6064-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MM1/24CountryDances_1794_Preston.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-6064-24CountryDances_1794_Preston.abc 164 ABC music file with the extracted tune(s)
Tune-6064-24CountryDances_1794_Preston.ps 6 PostScript
Tune-6064-24CountryDances_1794_Preston.txt 164 Plain-text file with the extracted tune(s)
Tune-6064-get.log 4432 Log file, useful mostly for debugging
Tune-60642-get.log 3643 Log file, useful mostly for debugging
Tune-60645-Garryowen_with_variations_.abc 163 ABC music file with the extracted tune(s)
Tune-60645-Garryowen_with_variations_.pdf 2217 Portable Data Format
Tune-60645-Garryowen_with_variations_.ps 6 PostScript
Tune-60645-Garryowen_with_variations_.txt 163 Plain-text file with the extracted tune(s)
Tune-60645-get.log 5344 Log file, useful mostly for debugging
Tune-60647-get.log 4103 Log file, useful mostly for debugging
Tune-60648-get.log 5658 Log file, useful mostly for debugging
These files should be available for 24 hours.