pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-85561-hnr6.ps) >>/Users/jc/w/tmp/Tune-85561-get.log 2>&1" returned status 256
http://jjaquier.free.fr/midifiles/abc/hnr6.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-85561-get.log 4000 Log file, useful mostly for debugging
Tune-85561-hnr6.abc 330 ABC music file with the extracted tune(s)
Tune-85561-hnr6.ps 35315 PostScript
Tune-85561-hnr6.txt 330 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.