Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book05/24NewCotillons_1770_Longman.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7493-24NewCotillons_1770_Longman.ps) >>/Users/jc/w/tmp/Tune-7493-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book05/24NewCotillons_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_74936.log 161667 Log file, useful mostly for debugging
Tune-7493-24NewCotillons_1770_Longman.abc 166 ABC music file with the extracted tune(s)
Tune-7493-24NewCotillons_1770_Longman.ps 6 PostScript
Tune-7493-24NewCotillons_1770_Longman.txt 166 Plain-text file with the extracted tune(s)
Tune-7493-get.log 4435 Log file, useful mostly for debugging
Tune-74935-get.log 9426 Log file, useful mostly for debugging
Tune-74936-get.log 8094 Log file, useful mostly for debugging
Tune-74937-get.log 16452 Log file, useful mostly for debugging
Tune-74939-get.log 6012 Log file, useful mostly for debugging
These files should be available for 24 hours.