Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book24/24NewCotillons_1770_Longman.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7477-24NewCotillons_1770_Longman.ps) >>/Users/jc/w/tmp/Tune-7477-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book24/24NewCotillons_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_74772.log 674011 Log file, useful mostly for debugging
Coll_74777.log 159067 Log file, useful mostly for debugging
Tune-7477-24NewCotillons_1770_Longman.abc 166 ABC music file with the extracted tune(s)
Tune-7477-24NewCotillons_1770_Longman.ps 6 PostScript
Tune-7477-24NewCotillons_1770_Longman.txt 166 Plain-text file with the extracted tune(s)
Tune-7477-get.log 8089 Log file, useful mostly for debugging
Tune-74770-get.log 3906 Log file, useful mostly for debugging
Tune-74771-get.log 5536 Log file, useful mostly for debugging
Tune-74772-get.log 4716 Log file, useful mostly for debugging
Tune-74773-get.log 4100 Log file, useful mostly for debugging
Tune-74774-get.log 24254 Log file, useful mostly for debugging
Tune-74776-get.log 3888 Log file, useful mostly for debugging
Tune-74779-get.log 3408 Log file, useful mostly for debugging
These files should be available for 24 hours.