Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/AdvancedSD/24FavouriteDances_1779_Straight.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7241-24FavouriteDances_1779_Straight.ps) >>/Users/jc/w/tmp/Tune-7241-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/AdvancedSD/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-7241-24FavouriteDances_1779_Straight.abc 174 ABC music file with the extracted tune(s)
Tune-7241-24FavouriteDances_1779_Straight.ps 6 PostScript
Tune-7241-24FavouriteDances_1779_Straight.txt 174 Plain-text file with the extracted tune(s)
Tune-7241-get.log 10952 Log file, useful mostly for debugging
Tune-72410-get.log 9970 Log file, useful mostly for debugging
Tune-72411-get.log 9654 Log file, useful mostly for debugging
Tune-72413-get.log 9439 Log file, useful mostly for debugging
Tune-72416-get.log 3678 Log file, useful mostly for debugging
Tune-72417-get.log 8229 Log file, useful mostly for debugging
Tune-72418-get.log 7946 Log file, useful mostly for debugging
Tune-72419-get.log 5475 Log file, useful mostly for debugging
These files should be available for 24 hours.