Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1803/dance.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5696-dance.ps) >>/Users/jc/w/tmp/Tune-5696-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1803/dance.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-5696-dance.abc 142 ABC music file with the extracted tune(s)
Tune-5696-dance.ps 6 PostScript
Tune-5696-dance.txt 142 Plain-text file with the extracted tune(s)
Tune-5696-get.log 7191 Log file, useful mostly for debugging
Tune-56963-get.log 10020 Log file, useful mostly for debugging
Tune-56965-20252_American_March.abc 684 ABC music file with the extracted tune(s)
Tune-56965-20252_American_March.pdf 13698 Portable Data Format
Tune-56965-20252_American_March.ps 35976 PostScript
Tune-56965-20252_American_March.txt 684 Plain-text file with the extracted tune(s)
Tune-56965-get.log 5770 Log file, useful mostly for debugging
Tune-56966-get.log 5335 Log file, useful mostly for debugging
These files should be available for 24 hours.