pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-91109-CampbellsAreComing.ps) >>/Users/jc/w/tmp/Tune-91109-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/CampbellsAreComing.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
Coll_91109.log 68504 Log file, useful mostly for debugging
Form_91109.log 2277 Log file, useful mostly for debugging
Tune-91109-CampbellsAreComing.abc 343 ABC music file with the extracted tune(s)
Tune-91109-CampbellsAreComing.ps 34908 PostScript
Tune-91109-CampbellsAreComing.txt 343 Plain-text file with the extracted tune(s)
Tune-91109-get.log 9201 Log file, useful mostly for debugging
These files should be available for 24 hours.