pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-85106-4274_Ohio.ps) >>/Users/jc/w/tmp/Tune-85106-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM4/4274_Ohio.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-85106-4274_Ohio.abc 426 ABC music file with the extracted tune(s)
Tune-85106-4274_Ohio.ps 34063 PostScript
Tune-85106-4274_Ohio.txt 426 Plain-text file with the extracted tune(s)
Tune-85106-get.log 4451 Log file, useful mostly for debugging
These files should be available for 24 hours.