Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/SelectionOfDancesReelsAndWaltzes/CharlesZeuner_TremontQuadrilles2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1583-CharlesZeuner_TremontQuadrilles2.ps) >>/Users/jc/w/tmp/Tune-1583-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SelectionOfDancesReelsAndWaltzes/CharlesZeuner_TremontQuadrilles2.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_15834.log 164267 Log file, useful mostly for debugging
Tune-1583-CharlesZeuner_TremontQuadrilles2.abc 197 ABC music file with the extracted tune(s)
Tune-1583-CharlesZeuner_TremontQuadrilles2.ps 6 PostScript
Tune-1583-CharlesZeuner_TremontQuadrilles2.txt 197 Plain-text file with the extracted tune(s)
Tune-1583-get.log 9399 Log file, useful mostly for debugging
Tune-15830-Tune-61883-510_Campbells_are_coming.abc 187 ABC music file with the extracted tune(s)
Tune-15830-Tune-61883-510_Campbells_are_coming.txt 187 Plain-text file with the extracted tune(s)
Tune-15830-get.log 3232 Log file, useful mostly for debugging
Tune-15833-get.log 39556 Log file, useful mostly for debugging
Tune-15834-get.log 4448 Log file, useful mostly for debugging
Tune-15835-get.log 5606 Log file, useful mostly for debugging
Tune-15837-get.log 5274 Log file, useful mostly for debugging
Tune-15838-Tune-60691-GentlemansMagazine.abc 181 ABC music file with the extracted tune(s)
Tune-15838-Tune-60691-GentlemansMagazine.ps 6 PostScript
Tune-15838-Tune-60691-GentlemansMagazine.txt 181 Plain-text file with the extracted tune(s)
Tune-15838-get.log 8819 Log file, useful mostly for debugging
These files should be available for 24 hours.