Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1751/sett.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5561-sett.ps) >>/Users/jc/w/tmp/Tune-5561-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1751/sett.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-5561-get.log 9345 Log file, useful mostly for debugging
Tune-5561-sett.abc 141 ABC music file with the extracted tune(s)
Tune-5561-sett.ps 6 PostScript
Tune-5561-sett.txt 141 Plain-text file with the extracted tune(s)
Tune-55610-get.log 5482 Log file, useful mostly for debugging
Tune-55611-get.log 3508 Log file, useful mostly for debugging
Tune-55613-get.log 4282 Log file, useful mostly for debugging
Tune-55615-get.log 4492 Log file, useful mostly for debugging
Tune-55616-get.log 4478 Log file, useful mostly for debugging
Tune-55618-Gow-CR-abc1.abc 148 ABC music file with the extracted tune(s)
Tune-55618-Gow-CR-abc1.txt 148 Plain-text file with the extracted tune(s)
Tune-55618-Thompson_V2_1758-1765_FTM.abc 162 ABC music file with the extracted tune(s)
Tune-55618-Thompson_V2_1758-1765_FTM.txt 162 Plain-text file with the extracted tune(s)
Tune-55618-get.log 6656 Log file, useful mostly for debugging
Tune-55619-get.log 4515 Log file, useful mostly for debugging
These files should be available for 24 hours.