pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54218-An.ps) >>/Users/jc/w/tmp/Tune-54218-get.log 2>&1" returned status 256
http://www.davyrogers.com/Davy's Tunes ABCs/An Riomhphleib (Reel).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-54218-An.abc 581 ABC music file with the extracted tune(s)
Tune-54218-An.ps 36962 PostScript
Tune-54218-An.txt 581 Plain-text file with the extracted tune(s)
Tune-54218-get.log 4787 Log file, useful mostly for debugging
These files should be available for 24 hours.