Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/20461_Drimen_Duff.abc/all"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1376-all.ps) >>/Users/jc/w/tmp/Tune-1376-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JamesOswald/CPC/20461_Drimen_Duff.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_13764.log 263256 Log file, useful mostly for debugging
Form_13767.log 878 Log file, useful mostly for debugging
Form_13769.log 855 Log file, useful mostly for debugging
Tune-1376-all.abc 169 ABC music file with the extracted tune(s)
Tune-1376-all.ps 6 PostScript
Tune-1376-all.txt 169 Plain-text file with the extracted tune(s)
Tune-1376-get.log 4043 Log file, useful mostly for debugging
Tune-13761-get.log 3756 Log file, useful mostly for debugging
Tune-13763-all.abc 174 ABC music file with the extracted tune(s)
Tune-13763-all.ps 6 PostScript
Tune-13763-all.txt 174 Plain-text file with the extracted tune(s)
Tune-13763-get.log 4008 Log file, useful mostly for debugging
Tune-13767-all.abc 162 ABC music file with the extracted tune(s)
Tune-13767-all.ps 6 PostScript
Tune-13767-all.txt 162 Plain-text file with the extracted tune(s)
Tune-13767-get.log 206491 Log file, useful mostly for debugging
Tune-13769-get.log 3525 Log file, useful mostly for debugging
These files should be available for 24 hours.