pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-16929-OBrien.ps) >>/Users/jc/w/tmp/Tune-16929-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/redhawk.org/other/OBrien.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_16929.log 956 Log file, useful mostly for debugging
Tune-16929-OBrien.abc 328 ABC music file with the extracted tune(s)
Tune-16929-OBrien.ps 34379 PostScript
Tune-16929-OBrien.txt 328 Plain-text file with the extracted tune(s)
Tune-16929-get.log 14309 Log file, useful mostly for debugging
These files should be available for 24 hours.