Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/dmoi/Remick.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9740-Remick.ps) >>/Users/jc/w/tmp/Tune-9740-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/dmoi/Remick.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-9740-Remick.abc 143 ABC music file with the extracted tune(s)
Tune-9740-Remick.ps 6 PostScript
Tune-9740-Remick.txt 143 Plain-text file with the extracted tune(s)
Tune-9740-get.log 3980 Log file, useful mostly for debugging
Tune-97400-RobertPurdie_TomThumb.abc 158 ABC music file with the extracted tune(s)
Tune-97400-RobertPurdie_TomThumb.ps 6 PostScript
Tune-97400-RobertPurdie_TomThumb.txt 158 Plain-text file with the extracted tune(s)
Tune-97400-get.log 28835 Log file, useful mostly for debugging
Tune-97402-get.log 5800 Log file, useful mostly for debugging
Tune-97405-get.log 119978 Log file, useful mostly for debugging
Tune-97408-get.log 3320 Log file, useful mostly for debugging
These files should be available for 24 hours.