Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/session/PF/Belmont/Inisheer-G-32-3.abc/waltz"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8430-waltz.ps) >>/Users/jc/w/tmp/Tune-8430-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/session/PF/Belmont/Inisheer-G-32-3.abc/waltz

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_84308.log 271685 Log file, useful mostly for debugging
Tune-8430-get.log 4063 Log file, useful mostly for debugging
Tune-8430-waltz.abc 167 ABC music file with the extracted tune(s)
Tune-8430-waltz.ps 6 PostScript
Tune-8430-waltz.txt 167 Plain-text file with the extracted tune(s)
Tune-84303-CMCIT.abc 149 ABC music file with the extracted tune(s)
Tune-84303-CMCIT.pdf 2217 Portable Data Format
Tune-84303-CMCIT.ps 6 PostScript
Tune-84303-CMCIT.txt 149 Plain-text file with the extracted tune(s)
Tune-84303-get.log 4779 Log file, useful mostly for debugging
These files should be available for 24 hours.