pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-66618-Ragged_Jacket.ps) >>/Users/jc/w/tmp/Tune-66618-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/GM/Ragged_Jacket.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-66618-Ragged_Jacket.abc 774 ABC music file with the extracted tune(s)
Tune-66618-Ragged_Jacket.ps 34092 PostScript
Tune-66618-Ragged_Jacket.txt 774 Plain-text file with the extracted tune(s)
Tune-66618-get.log 4412 Log file, useful mostly for debugging
These files should be available for 24 hours.