Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/ONeills/Rare_Small/0040_Warkworth_Castle.abc/book0"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7360-book0.ps) >>/Users/jc/w/tmp/Tune-7360-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ONeills/Rare_Small/0040_Warkworth_Castle.abc/book0

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-7360-book0.abc 178 ABC music file with the extracted tune(s)
Tune-7360-book0.ps 6 PostScript
Tune-7360-book0.txt 178 Plain-text file with the extracted tune(s)
Tune-7360-get.log 9547 Log file, useful mostly for debugging
Tune-73605-get.log 4031 Log file, useful mostly for debugging
Tune-73607-FiddichsideLasses-001.svg 17902 Scalable Vector Graphics format
Tune-73607-FiddichsideLasses.abc 389 ABC music file with the extracted tune(s)
Tune-73607-FiddichsideLasses.txt 389 Plain-text file with the extracted tune(s)
Tune-73607-get.log 4181 Log file, useful mostly for debugging
These files should be available for 24 hours.