pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-96372-Bucket.ps) >>/Users/jc/w/tmp/Tune-96372-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JohnWalsh/Bucket.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_96372.log 464009 Log file, useful mostly for debugging
Tune-96372-Bucket.abc 1062 ABC music file with the extracted tune(s)
Tune-96372-Bucket.ps 33963 PostScript
Tune-96372-Bucket.txt 1062 Plain-text file with the extracted tune(s)
Tune-96372-get.log 4286 Log file, useful mostly for debugging
These files should be available for 24 hours.