Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/20311_Deil_Stick_the_Minister.abc/all"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-80301-all.ps) >>/Users/jc/w/tmp/Tune-80301-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/20311_Deil_Stick_the_Minister.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
Find_80301.log 1494 Log file, useful mostly for debugging
Form_80301.log 850 Log file, useful mostly for debugging
Tune-80301-all.abc 181 ABC music file with the extracted tune(s)
Tune-80301-all.ps 6 PostScript
Tune-80301-all.txt 181 Plain-text file with the extracted tune(s)
Tune-80301-get.log 20405 Log file, useful mostly for debugging
These files should be available for 24 hours.