Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book04/24CountryDances_1780_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3304-24CountryDances_1780_Thompson.ps) >>/Users/jc/w/tmp/Tune-3304-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book04/24CountryDances_1780_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-3304-24CountryDances_1780_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-3304-24CountryDances_1780_Thompson.ps 6 PostScript
Tune-3304-24CountryDances_1780_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-3304-get.log 4473 Log file, useful mostly for debugging
Tune-33040-get.log 9100 Log file, useful mostly for debugging
Tune-33043-get.log 3296 Log file, useful mostly for debugging
Tune-33044-get.log 4119 Log file, useful mostly for debugging
Tune-33045-get.log 8853 Log file, useful mostly for debugging
Tune-33046-get.log 4374 Log file, useful mostly for debugging
Tune-33049-get.log 9882 Log file, useful mostly for debugging
These files should be available for 24 hours.