pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-96309-PloughboyR.ps) >>/Users/jc/w/tmp/Tune-96309-get.log 2>&1" returned status 256
http://terrytraub.org/abc/PloughboyR.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-96309-PloughboyR.abc 338 ABC music file with the extracted tune(s)
Tune-96309-PloughboyR.ps 34552 PostScript
Tune-96309-PloughboyR.txt 338 Plain-text file with the extracted tune(s)
Tune-96309-get.log 4165 Log file, useful mostly for debugging
These files should be available for 24 hours.