Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1784/NorthumbrianMinstrelsy.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3534-NorthumbrianMinstrelsy.ps) >>/Users/jc/w/tmp/Tune-3534-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1784/NorthumbrianMinstrelsy.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-3534-NorthumbrianMinstrelsy.abc 159 ABC music file with the extracted tune(s)
Tune-3534-NorthumbrianMinstrelsy.ps 6 PostScript
Tune-3534-NorthumbrianMinstrelsy.txt 159 Plain-text file with the extracted tune(s)
Tune-3534-get.log 4316 Log file, useful mostly for debugging
Tune-35341-get.log 4824 Log file, useful mostly for debugging
Tune-35342-get.log 5711 Log file, useful mostly for debugging
Tune-35345-24CountryDances_1772_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-35345-24CountryDances_1772_Thompson.pdf 2217 Portable Data Format
Tune-35345-24CountryDances_1772_Thompson.ps 6 PostScript
Tune-35345-24CountryDances_1772_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-35345-get.log 5433 Log file, useful mostly for debugging
Tune-35349-24CountryDances_1804_Preston.abc 165 ABC music file with the extracted tune(s)
Tune-35349-24CountryDances_1804_Preston.pdf 2217 Portable Data Format
Tune-35349-24CountryDances_1804_Preston.ps 6 PostScript
Tune-35349-24CountryDances_1804_Preston.txt 165 Plain-text file with the extracted tune(s)
Tune-35349-get.log 5408 Log file, useful mostly for debugging
These files should be available for 24 hours.