Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book42/24CountryDances_1778_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9617-24CountryDances_1778_Thompson.ps) >>/Users/jc/w/tmp/Tune-9617-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book42/24CountryDances_1778_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-9617-24CountryDances_1778_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-9617-24CountryDances_1778_Thompson.ps 6 PostScript
Tune-9617-24CountryDances_1778_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-9617-get.log 10204 Log file, useful mostly for debugging
Tune-96170-get.log 8049 Log file, useful mostly for debugging
Tune-96171-get.log 9052 Log file, useful mostly for debugging
Tune-96172-get.log 4332 Log file, useful mostly for debugging
Tune-96173-get.log 4488 Log file, useful mostly for debugging
Tune-96174-get.log 7582 Log file, useful mostly for debugging
Tune-96175-get.log 9161 Log file, useful mostly for debugging
Tune-96176-get.log 12205 Log file, useful mostly for debugging
Tune-96179-get.log 9893 Log file, useful mostly for debugging
These files should be available for 24 hours.