Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book32/cont.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9678-cont.ps) >>/Users/jc/w/tmp/Tune-9678-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book32/cont.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-9678-cont.abc 143 ABC music file with the extracted tune(s)
Tune-9678-cont.ps 6 PostScript
Tune-9678-cont.txt 143 Plain-text file with the extracted tune(s)
Tune-9678-get.log 3950 Log file, useful mostly for debugging
Tune-96780-get.log 4998 Log file, useful mostly for debugging
Tune-96781-get.log 4063 Log file, useful mostly for debugging
Tune-96782-get.log 8372 Log file, useful mostly for debugging
Tune-96783-get.log 3214 Log file, useful mostly for debugging
Tune-96785-get.log 5756 Log file, useful mostly for debugging
Tune-96788-get.log 4868 Log file, useful mostly for debugging
These files should be available for 24 hours.