Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/abc1/12CountryDances_1796_Cahusac.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2863-12CountryDances_1796_Cahusac.ps) >>/Users/jc/w/tmp/Tune-2863-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/abc1/12CountryDances_1796_Cahusac.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_28639.log 319463 Log file, useful mostly for debugging
Tune-2863-094_Oats_and_Beans.abc 1359 ABC music file with the extracted tune(s)
Tune-2863-094_Oats_and_Beans.ps 37799 PostScript
Tune-2863-094_Oats_and_Beans.txt 1359 Plain-text file with the extracted tune(s)
Tune-2863-12CountryDances_1796_Cahusac.abc 165 ABC music file with the extracted tune(s)
Tune-2863-12CountryDances_1796_Cahusac.ps 6 PostScript
Tune-2863-12CountryDances_1796_Cahusac.txt 165 Plain-text file with the extracted tune(s)
Tune-2863-get.log 9108 Log file, useful mostly for debugging
Tune-28633-OriginallyMine.abc 150 ABC music file with the extracted tune(s)
Tune-28633-OriginallyMine.txt 150 Plain-text file with the extracted tune(s)
Tune-28633-get.log 3250 Log file, useful mostly for debugging
Tune-28634-get.log 1343 Log file, useful mostly for debugging
These files should be available for 24 hours.