Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1750/FARNE_Anonymous1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8504-FARNE_Anonymous1.ps) >>/Users/jc/w/tmp/Tune-8504-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1750/FARNE_Anonymous1.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-8504-FARNE_Anonymous1.abc 153 ABC music file with the extracted tune(s)
Tune-8504-FARNE_Anonymous1.ps 6 PostScript
Tune-8504-FARNE_Anonymous1.txt 153 Plain-text file with the extracted tune(s)
Tune-8504-get.log 4192 Log file, useful mostly for debugging
Tune-85040-get.log 5527 Log file, useful mostly for debugging
Tune-85041-get.log 5124 Log file, useful mostly for debugging
Tune-85043-get.log 121534 Log file, useful mostly for debugging
Tune-85046-get.log 3114 Log file, useful mostly for debugging
Tune-85047-get.log 3238 Log file, useful mostly for debugging
Tune-85048-get.log 4494 Log file, useful mostly for debugging
Tune-85049-get.log 4318 Log file, useful mostly for debugging
These files should be available for 24 hours.