Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/MacNab01/24CountryDances_1770_Longman.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9912-24CountryDances_1770_Longman.ps) >>/Users/jc/w/tmp/Tune-9912-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/MacNab01/24CountryDances_1770_Longman.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_99121.log 577093 Log file, useful mostly for debugging
Coll_99127.log 577090 Log file, useful mostly for debugging
Tune-9912-24CountryDances_1770_Longman.abc 169 ABC music file with the extracted tune(s)
Tune-9912-24CountryDances_1770_Longman.ps 6 PostScript
Tune-9912-24CountryDances_1770_Longman.txt 169 Plain-text file with the extracted tune(s)
Tune-9912-get.log 4468 Log file, useful mostly for debugging
Tune-99120-get.log 4227 Log file, useful mostly for debugging
Tune-99123-24CountryDances_1782_Thompson.abc 168 ABC music file with the extracted tune(s)
Tune-99123-24CountryDances_1782_Thompson.ps 6 PostScript
Tune-99123-24CountryDances_1782_Thompson.txt 168 Plain-text file with the extracted tune(s)
Tune-99123-get.log 8944 Log file, useful mostly for debugging
Tune-99125-get.log 4510 Log file, useful mostly for debugging
Tune-99126-get.log 3842 Log file, useful mostly for debugging
Tune-99127-24CountryDances_1798_Preston.abc 168 ABC music file with the extracted tune(s)
Tune-99127-24CountryDances_1798_Preston.ps 6 PostScript
Tune-99127-24CountryDances_1798_Preston.txt 168 Plain-text file with the extracted tune(s)
Tune-99127-get.log 4391 Log file, useful mostly for debugging
Tune-99128-get.log 4339 Log file, useful mostly for debugging
These files should be available for 24 hours.