Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/21372_the_Maid_of_Elgin.abc/all"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1413-all.ps) >>/Users/jc/w/tmp/Tune-1413-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/21372_the_Maid_of_Elgin.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_14132.log 133773 Log file, useful mostly for debugging
Form_14134.log 956 Log file, useful mostly for debugging
Form_14137.log 857 Log file, useful mostly for debugging
Tune-1413-all.abc 175 ABC music file with the extracted tune(s)
Tune-1413-all.ps 6 PostScript
Tune-1413-all.txt 175 Plain-text file with the extracted tune(s)
Tune-1413-get.log 7645 Log file, useful mostly for debugging
Tune-14133-get.log 5662 Log file, useful mostly for debugging
Tune-14134-get.log 5937 Log file, useful mostly for debugging
Tune-14136-get.log 3501 Log file, useful mostly for debugging
Tune-14138-get.log 5725 Log file, useful mostly for debugging
These files should be available for 24 hours.