pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-14656-Wind_That_Shakes_the_Barley_HN-D-16-3.ps) >>/Users/jc/w/tmp/Tune-14656-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/reel/Wind_That_Shakes_the_Barley_HN-D-16-3.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-14656-Wind_That_Shakes_the_Barley_HN-D-16-3.abc 249 ABC music file with the extracted tune(s)
Tune-14656-Wind_That_Shakes_the_Barley_HN-D-16-3.ps 34291 PostScript
Tune-14656-Wind_That_Shakes_the_Barley_HN-D-16-3.txt 249 Plain-text file with the extracted tune(s)
Tune-14656-get.log 4920 Log file, useful mostly for debugging
These files should be available for 24 hours.