Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/slide/MichaelDabney_12Minuets12Dances-1760-V1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9681-MichaelDabney_12Minuets12Dances-1760-V1.ps) >>/Users/jc/w/tmp/Tune-9681-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/slide/MichaelDabney_12Minuets12Dances-1760-V1.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-9681-MichaelDabney_12Minuets12Dances-1760-V1.abc 177 ABC music file with the extracted tune(s)
Tune-9681-MichaelDabney_12Minuets12Dances-1760-V1.ps 6 PostScript
Tune-9681-MichaelDabney_12Minuets12Dances-1760-V1.txt 177 Plain-text file with the extracted tune(s)
Tune-9681-get.log 12223 Log file, useful mostly for debugging
Tune-96810-get.log 4604 Log file, useful mostly for debugging
Tune-96811-get.log 7769 Log file, useful mostly for debugging
Tune-96812-get.log 1347 Log file, useful mostly for debugging
Tune-96816-get.log 5735 Log file, useful mostly for debugging
Tune-96818-get.log 14086 Log file, useful mostly for debugging
Tune-96819-get.log 7536 Log file, useful mostly for debugging
These files should be available for 24 hours.