Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/COST/Pringle.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8780-Pringle.ps) >>/Users/jc/w/tmp/Tune-8780-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/COST/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_87806.log 165567 Log file, useful mostly for debugging
Tune-8780-Pringle.abc 144 ABC music file with the extracted tune(s)
Tune-8780-Pringle.ps 6 PostScript
Tune-8780-Pringle.txt 144 Plain-text file with the extracted tune(s)
Tune-8780-get.log 4003 Log file, useful mostly for debugging
Tune-87801-4424_Buy_a_Broom_Waltz.abc 521 ABC music file with the extracted tune(s)
Tune-87801-4424_Buy_a_Broom_Waltz.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-87801-4424_Buy_a_Broom_Waltz.ps 34189 PostScript
Tune-87801-4424_Buy_a_Broom_Waltz.txt 521 Plain-text file with the extracted tune(s)
Tune-87801-get.log 6912 Log file, useful mostly for debugging
Tune-87806-get.log 1408 Log file, useful mostly for debugging
These files should be available for 24 hours.