pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6067-Wind_That_Shakes_the_Barley.ps) >>/Users/jc/w/tmp/Tune-6067-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/Wind_That_Shakes_the_Barley.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_60674.log 888 Log file, useful mostly for debugging
Form_60675.log 842 Log file, useful mostly for debugging
Tune-6067-Wind_That_Shakes_the_Barley.abc 445 ABC music file with the extracted tune(s)
Tune-6067-Wind_That_Shakes_the_Barley.ps 34589 PostScript
Tune-6067-Wind_That_Shakes_the_Barley.txt 445 Plain-text file with the extracted tune(s)
Tune-6067-get.log 4848 Log file, useful mostly for debugging
These files should be available for 24 hours.