Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Pioneer/24CountryDances_1803_Gray_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7258-24CountryDances_1803_Gray_Thompson.ps) >>/Users/jc/w/tmp/Tune-7258-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Pioneer/24CountryDances_1803_Gray_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-7258-24CountryDances_1803_Gray_Thompson.abc 174 ABC music file with the extracted tune(s)
Tune-7258-24CountryDances_1803_Gray_Thompson.ps 6 PostScript
Tune-7258-24CountryDances_1803_Gray_Thompson.txt 174 Plain-text file with the extracted tune(s)
Tune-7258-get.log 4586 Log file, useful mostly for debugging
Tune-72580-get.log 8774 Log file, useful mostly for debugging
Tune-72581-get.log 5869 Log file, useful mostly for debugging
Tune-72582-get.log 5475 Log file, useful mostly for debugging
Tune-72584-get.log 3082 Log file, useful mostly for debugging
Tune-72585-get.log 3616 Log file, useful mostly for debugging
Tune-72588-get.log 4404 Log file, useful mostly for debugging
Tune-72589-421_Durham_March.abc 798 ABC music file with the extracted tune(s)
Tune-72589-421_Durham_March.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-72589-421_Durham_March.ps 36104 PostScript
Tune-72589-421_Durham_March.txt 798 Plain-text file with the extracted tune(s)
Tune-72589-get.log 5518 Log file, useful mostly for debugging
These files should be available for 24 hours.