pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4937-h.ps) >>/Users/jc/w/tmp/Tune-4937-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_49370.log 817 Log file, useful mostly for debugging
Tune-4937-get.log 0 Log file, useful mostly for debugging
Tune-4937-h.abc 0 ABC music file with the extracted tune(s)
Tune-4937-h.ps 0 PostScript
Tune-4937-h.txt 0 Plain-text file with the extracted tune(s)
Tune-49373-get.log 3053 Log file, useful mostly for debugging
Tune-49374-get.log 3890 Log file, useful mostly for debugging
These files should be available for 24 hours.