Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/16061_Patie_and_Peggy.abc/all"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-86149-all.ps) >>/Users/jc/w/tmp/Tune-86149-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/16061_Patie_and_Peggy.abc/all

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_86149.log 514753 Log file, useful mostly for debugging
Tune-86149-8067_Trip_to_Sligo.abc 397 ABC music file with the extracted tune(s)
Tune-86149-8067_Trip_to_Sligo.pdf 14077 Portable Data Format
Tune-86149-8067_Trip_to_Sligo.ps 34426 PostScript
Tune-86149-8067_Trip_to_Sligo.txt 397 Plain-text file with the extracted tune(s)
Tune-86149-all.abc 173 ABC music file with the extracted tune(s)
Tune-86149-all.ps 6 PostScript
Tune-86149-all.txt 173 Plain-text file with the extracted tune(s)
Tune-86149-get.log 20042 Log file, useful mostly for debugging
These files should be available for 24 hours.