pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-78889-Harbour_D.ps) >>/Users/jc/w/tmp/Tune-78889-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/Harbour_D.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Coll_78889.log 306810 Log file, useful mostly for debugging
Tune-78889-Harbour_D.abc 455 ABC music file with the extracted tune(s)
Tune-78889-Harbour_D.ps 35354 PostScript
Tune-78889-Harbour_D.txt 455 Plain-text file with the extracted tune(s)
Tune-78889-get.log 4388 Log file, useful mostly for debugging
These files should be available for 24 hours.