Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/MM3/JamesJohnson_ScotsMusicalMuseumV5-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4450-JamesJohnson_ScotsMusicalMuseumV5-V2.ps) >>/Users/jc/w/tmp/Tune-4450-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/MM3/JamesJohnson_ScotsMusicalMuseumV5-V2.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-4450-JamesJohnson_ScotsMusicalMuseumV5-V2.abc 172 ABC music file with the extracted tune(s)
Tune-4450-JamesJohnson_ScotsMusicalMuseumV5-V2.ps 6 PostScript
Tune-4450-JamesJohnson_ScotsMusicalMuseumV5-V2.txt 172 Plain-text file with the extracted tune(s)
Tune-4450-get.log 10018 Log file, useful mostly for debugging
Tune-44500-get.log 58990 Log file, useful mostly for debugging
Tune-44503-get.log 4362 Log file, useful mostly for debugging
Tune-44505-get.log 4513 Log file, useful mostly for debugging
Tune-44506-get.log 4124 Log file, useful mostly for debugging
Tune-44507-24CountryDances_1805_Gray_Thompson.abc 173 ABC music file with the extracted tune(s)
Tune-44507-24CountryDances_1805_Gray_Thompson.ps 6 PostScript
Tune-44507-24CountryDances_1805_Gray_Thompson.txt 173 Plain-text file with the extracted tune(s)
Tune-44507-get.log 8925 Log file, useful mostly for debugging
Tune-44509-get.log 13421 Log file, useful mostly for debugging
These files should be available for 24 hours.