Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book10/proto.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-713-proto.ps) >>/Users/jc/w/tmp/Tune-713-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book10/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
Coll_71316.log 637612 Log file, useful mostly for debugging
Coll_71344.log 637612 Log file, useful mostly for debugging
Coll_71361.log 651612 Log file, useful mostly for debugging
Coll_71391.log 647411 Log file, useful mostly for debugging
List71331.log 162 Log file, useful mostly for debugging
Tune-713-get.log 3958 Log file, useful mostly for debugging
Tune-713-proto.abc 144 ABC music file with the extracted tune(s)
Tune-713-proto.ps 6 PostScript
Tune-713-proto.txt 144 Plain-text file with the extracted tune(s)
Tune-71300-get.log 5794 Log file, useful mostly for debugging
Tune-71301-get.log 4930 Log file, useful mostly for debugging
Tune-71302-get.log 1284 Log file, useful mostly for debugging
Tune-71306-get.log 3733 Log file, useful mostly for debugging
Tune-71315-get.log 5949 Log file, useful mostly for debugging
Tune-71327-get.log 1284 Log file, useful mostly for debugging
Tune-71340-get.log 1273 Log file, useful mostly for debugging
Tune-71356-get.log 1306 Log file, useful mostly for debugging
Tune-7136-get.log 3916 Log file, useful mostly for debugging
Tune-71372-get.log 5597 Log file, useful mostly for debugging
Tune-71373-get.log 4271 Log file, useful mostly for debugging
Tune-71374-get.log 5726 Log file, useful mostly for debugging
These files should be available for 24 hours.