Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/T/LondonMagazine.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2472-LondonMagazine.ps) >>/Users/jc/w/tmp/Tune-2472-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/T/LondonMagazine.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_24721.log 951 Log file, useful mostly for debugging
Tune-2472-LondonMagazine.abc 148 ABC music file with the extracted tune(s)
Tune-2472-LondonMagazine.ps 6 PostScript
Tune-2472-LondonMagazine.txt 148 Plain-text file with the extracted tune(s)
Tune-2472-get.log 8341 Log file, useful mostly for debugging
Tune-24721-24CountryDances_1802_Thompson.abc 183 ABC music file with the extracted tune(s)
Tune-24721-24CountryDances_1802_Thompson.txt 183 Plain-text file with the extracted tune(s)
Tune-24721-get.log 9442 Log file, useful mostly for debugging
Tune-24722-get.log 5289 Log file, useful mostly for debugging
Tune-24727-get.log 1572 Log file, useful mostly for debugging
Tune-24728-get.log 3923 Log file, useful mostly for debugging
Tune-24729-get.log 9039 Log file, useful mostly for debugging
These files should be available for 24 hours.