pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-56726-kv394.ps) >>/Users/jc/w/tmp/Tune-56726-get.log 2>&1" returned status 256
http://www.mannincloud.info/music/kv/kv394.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
Coll_56726.log 134337 Log file, useful mostly for debugging
Tune-56726-get.log 4143 Log file, useful mostly for debugging
Tune-56726-kv394.abc 256 ABC music file with the extracted tune(s)
Tune-56726-kv394.ps 32967 PostScript
Tune-56726-kv394.txt 256 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.