pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-63195-math.ps) >>/Users/jc/w/tmp/Tune-63195-get.log 2>&1" returned status 256
http://www.nigelgatherer.com/tunes/abc/abc5/math.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
Tune-63195-get.log 4101 Log file, useful mostly for debugging
Tune-63195-math.abc 440 ABC music file with the extracted tune(s)
Tune-63195-math.ps 38416 PostScript
Tune-63195-math.txt 440 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.