pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-24868-hnj2.ps) >>/Users/jc/w/tmp/Tune-24868-get.log 2>&1" returned status 256
http://jjaquier.free.fr/midifiles/abc/hnj2.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-24868-get.log 4194 Log file, useful mostly for debugging
Tune-24868-hnj2.abc 633 ABC music file with the extracted tune(s)
Tune-24868-hnj2.ps 39799 PostScript
Tune-24868-hnj2.txt 633 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.