Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Graded1/proto.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2509-proto.ps) >>/Users/jc/w/tmp/Tune-2509-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Graded1/proto.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-2509-get.log 3981 Log file, useful mostly for debugging
Tune-2509-proto.abc 145 ABC music file with the extracted tune(s)
Tune-2509-proto.ps 6 PostScript
Tune-2509-proto.txt 145 Plain-text file with the extracted tune(s)
Tune-25090-get.log 4211 Log file, useful mostly for debugging
Tune-25091-get.log 3374 Log file, useful mostly for debugging
Tune-25093-get.log 6139 Log file, useful mostly for debugging
Tune-25094-get.log 5681 Log file, useful mostly for debugging
Tune-25095-get.log 4865 Log file, useful mostly for debugging
Tune-25097-get.log 5585 Log file, useful mostly for debugging
Tune-25098-get.log 1405 Log file, useful mostly for debugging
These files should be available for 24 hours.