pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4250-h.ps) >>/Users/jc/w/tmp/Tune-4250-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
Coll_42502.log 261969 Log file, useful mostly for debugging
Tune-4250-get.log 4394 Log file, useful mostly for debugging
Tune-4250-h.abc 205 ABC music file with the extracted tune(s)
Tune-4250-h.ps 35076 PostScript
Tune-4250-h.txt 205 Plain-text file with the extracted tune(s)
Tune-42501-get.log 3861 Log file, useful mostly for debugging
Tune-42504-get.log 2929 Log file, useful mostly for debugging
Tune-42507-get.log 5209 Log file, useful mostly for debugging
These files should be available for 24 hours.