Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/sets/24FavouriteDances_1779_Straight.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3700-24FavouriteDances_1779_Straight.ps) >>/Users/jc/w/tmp/Tune-3700-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/sets/24FavouriteDances_1779_Straight.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-3700-24FavouriteDances_1779_Straight.abc 168 ABC music file with the extracted tune(s)
Tune-3700-24FavouriteDances_1779_Straight.ps 6 PostScript
Tune-3700-24FavouriteDances_1779_Straight.txt 168 Plain-text file with the extracted tune(s)
Tune-3700-get.log 25352 Log file, useful mostly for debugging
Tune-37000-get.log 12530 Log file, useful mostly for debugging
Tune-37001-get.log 4444 Log file, useful mostly for debugging
Tune-37003-get.log 5643 Log file, useful mostly for debugging
Tune-37004-WilliamShepherdsCollections.abc 166 ABC music file with the extracted tune(s)
Tune-37004-WilliamShepherdsCollections.txt 166 Plain-text file with the extracted tune(s)
Tune-37004-get.log 15024 Log file, useful mostly for debugging
Tune-37005-get.log 12860 Log file, useful mostly for debugging
Tune-37008-get.log 9222 Log file, useful mostly for debugging
Tune-37009-get.log 10865 Log file, useful mostly for debugging
These files should be available for 24 hours.