pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3872-___.ps) >>/Users/jc/w/tmp/Tune-3872-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/session/waltz/Waltz:Szla_Dzieweczka-C,D-48-3.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Form_38721.log 1765 Log file, useful mostly for debugging
Sess-38729.log 30437 Log file, useful mostly for debugging
Tune-3872-___.abc 2557 ABC music file with the extracted tune(s)
Tune-3872-___.ps 49963 PostScript
Tune-3872-___.txt 2557 Plain-text file with the extracted tune(s)
Tune-3872-get.log 4533 Log file, useful mostly for debugging
Tune-38721-get.log 3946 Log file, useful mostly for debugging
Tune-38722-get.log 0 Log file, useful mostly for debugging
These files should be available for 24 hours.