pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3387-Dunnechan_D.ps) >>/Users/jc/w/tmp/Tune-3387-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/Dunnechan_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_3387.log 443095 Log file, useful mostly for debugging
Coll_33870.log 430450 Log file, useful mostly for debugging
Coll_33876.log 1036005 Log file, useful mostly for debugging
Tune-3387-Dunnechan_D.abc 869 ABC music file with the extracted tune(s)
Tune-3387-Dunnechan_D.ps 35211 PostScript
Tune-3387-Dunnechan_D.txt 869 Plain-text file with the extracted tune(s)
Tune-3387-get.log 4936 Log file, useful mostly for debugging
Tune-33879-get.log 1342 Log file, useful mostly for debugging
These files should be available for 24 hours.