pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-55460-trio_historic.ps) >>/Users/jc/w/tmp/Tune-55460-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/src/flabc-1.1.0/examples/trio_historic.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-55460-get.log 4685 Log file, useful mostly for debugging
Tune-55460-trio_historic.abc 1268 ABC music file with the extracted tune(s)
Tune-55460-trio_historic.ps 40487 PostScript
Tune-55460-trio_historic.txt 1268 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.