Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/PWFT/Pringle.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6627-Pringle.ps) >>/Users/jc/w/tmp/Tune-6627-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/PWFT/Pringle.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_66275.log 161667 Log file, useful mostly for debugging
Sess-66274.log 6983516 Log file, useful mostly for debugging
Tune-6627-Pringle.abc 144 ABC music file with the extracted tune(s)
Tune-6627-Pringle.ps 6 PostScript
Tune-6627-Pringle.txt 144 Plain-text file with the extracted tune(s)
Tune-6627-get.log 4003 Log file, useful mostly for debugging
Tune-66270-get.log 1308 Log file, useful mostly for debugging
Tune-66272-get.log 5601 Log file, useful mostly for debugging
Tune-66279-4000_Title.abc 665 ABC music file with the extracted tune(s)
Tune-66279-4000_Title.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-66279-4000_Title.ps 31914 PostScript
Tune-66279-4000_Title.txt 665 Plain-text file with the extracted tune(s)
Tune-66279-get.log 9745 Log file, useful mostly for debugging
These files should be available for 24 hours.