Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/mazurka/GentlemansMagazine.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7442-GentlemansMagazine.ps) >>/Users/jc/w/tmp/Tune-7442-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/mazurka/GentlemansMagazine.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_74425.log 910 Log file, useful mostly for debugging
Tune-7442-GentlemansMagazine.abc 158 ABC music file with the extracted tune(s)
Tune-7442-GentlemansMagazine.ps 6 PostScript
Tune-7442-GentlemansMagazine.txt 158 Plain-text file with the extracted tune(s)
Tune-7442-get.log 4252 Log file, useful mostly for debugging
Tune-74420-get.log 4440 Log file, useful mostly for debugging
Tune-74421-get.log 1440 Log file, useful mostly for debugging
Tune-74428-20564_Back_Side_of_Albany.abc 654 ABC music file with the extracted tune(s)
Tune-74428-20564_Back_Side_of_Albany.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-74428-20564_Back_Side_of_Albany.ps 35036 PostScript
Tune-74428-20564_Back_Side_of_Albany.txt 654 Plain-text file with the extracted tune(s)
Tune-74428-24CountryDances_1809_Cahusac_AK.abc 168 ABC music file with the extracted tune(s)
Tune-74428-24CountryDances_1809_Cahusac_AK.txt 168 Plain-text file with the extracted tune(s)
Tune-74428-24FavouriteDances_1779_Straight.abc 167 ABC music file with the extracted tune(s)
Tune-74428-24FavouriteDances_1779_Straight.ps 6 PostScript
Tune-74428-24FavouriteDances_1779_Straight.txt 167 Plain-text file with the extracted tune(s)
Tune-74428-get.log 13753 Log file, useful mostly for debugging
These files should be available for 24 hours.