Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/11241_Bonny_Mary.abc/all"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-66875-all.ps) >>/Users/jc/w/tmp/Tune-66875-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/11241_Bonny_Mary.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
Tune-66875-064_Time_to_Rise.abc 639 ABC music file with the extracted tune(s)
Tune-66875-064_Time_to_Rise.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-66875-064_Time_to_Rise.ps 32657 PostScript
Tune-66875-064_Time_to_Rise.txt 639 Plain-text file with the extracted tune(s)
Tune-66875-all.abc 168 ABC music file with the extracted tune(s)
Tune-66875-all.ps 6 PostScript
Tune-66875-all.txt 168 Plain-text file with the extracted tune(s)
Tune-66875-get.log 9495 Log file, useful mostly for debugging
These files should be available for 24 hours.