pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-31373-h.ps) >>/Users/jc/w/tmp/Tune-31373-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/terra.es/personal8/niltoni/h.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
Form_31373.log 753 Log file, useful mostly for debugging
Tune-31373-get.log 4171 Log file, useful mostly for debugging
Tune-31373-h.abc 246 ABC music file with the extracted tune(s)
Tune-31373-h.ps 35008 PostScript
Tune-31373-h.txt 246 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.