Mismatch: X:10990 doesn't match requested X:10992
Mismatch: X:10991 doesn't match requested X:10992
Mismatch: X:10993 doesn't match requested X:10992
Mismatch: X:10994 doesn't match requested X:10992
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-19546-Polka.ps) >>/Users/jc/w/tmp/Tune-19546-get.log 2>&1" returned status 256
http://michel.bellon.free.fr/Musique/abc/Nouveau/Polka.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-19546-Polka.abc 340 ABC music file with the extracted tune(s)
Tune-19546-Polka.ps 35110 PostScript
Tune-19546-Polka.txt 340 Plain-text file with the extracted tune(s)
Tune-19546-get.log 708501 Log file, useful mostly for debugging
These files should be available for 24 hours.