pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3472-b.ps) >>/Users/jc/w/tmp/Tune-3472-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/terra.es/personal8/niltoni/b.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_34724.log 273729 Log file, useful mostly for debugging
Coll_34726.log 65264 Log file, useful mostly for debugging
Coll_34727.log 603492 Log file, useful mostly for debugging
Tune-3472-b.abc 311 ABC music file with the extracted tune(s)
Tune-3472-b.ps 35743 PostScript
Tune-3472-b.txt 311 Plain-text file with the extracted tune(s)
Tune-3472-get.log 4145 Log file, useful mostly for debugging
Tune-34722-get.log 4134 Log file, useful mostly for debugging
Tune-34725-get.log 7025 Log file, useful mostly for debugging
These files should be available for 24 hours.