pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1895-TeviotBrig.ps) >>/Users/jc/w/tmp/Tune-1895-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/contrib/Tunes/TeviotBrig.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_18950.log 850 Log file, useful mostly for debugging
Tune-1895-TeviotBrig.abc 268 ABC music file with the extracted tune(s)
Tune-1895-TeviotBrig.ps 34900 PostScript
Tune-1895-TeviotBrig.txt 268 Plain-text file with the extracted tune(s)
Tune-1895-get.log 4338 Log file, useful mostly for debugging
Tune-18954-get.log 3420 Log file, useful mostly for debugging
Tune-18955-get.log 3931 Log file, useful mostly for debugging
Tune-18959-get.log 4238 Log file, useful mostly for debugging
These files should be available for 24 hours.