Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/PDF/CSRHW-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2541-CSRHW-abc2.ps) >>/Users/jc/w/tmp/Tune-2541-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/PDF/CSRHW-abc2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_25411.log 919 Log file, useful mostly for debugging
Tune-2541-CSRHW-abc2.abc 146 ABC music file with the extracted tune(s)
Tune-2541-CSRHW-abc2.ps 6 PostScript
Tune-2541-CSRHW-abc2.txt 146 Plain-text file with the extracted tune(s)
Tune-2541-get.log 9194 Log file, useful mostly for debugging
Tune-25410-get.log 4962 Log file, useful mostly for debugging
Tune-25412-get.log 3712 Log file, useful mostly for debugging
Tune-25413-get.log 5801 Log file, useful mostly for debugging
Tune-25414-get.log 3282 Log file, useful mostly for debugging
Tune-25418-get.log 4203 Log file, useful mostly for debugging
Tune-25419-get.log 3194 Log file, useful mostly for debugging
These files should be available for 24 hours.