pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-12876-Mets.ps) >>/Users/jc/w/tmp/Tune-12876-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/Intl/Metsakukkia/Metsäkukkia-Am-96-4.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-12876-Mets.abc 750 ABC music file with the extracted tune(s)
Tune-12876-Mets.ps 37238 PostScript
Tune-12876-Mets.txt 750 Plain-text file with the extracted tune(s)
Tune-12876-get.log 4938 Log file, useful mostly for debugging
These files should be available for 24 hours.