pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9338-Orkney_Reel.ps) >>/Users/jc/w/tmp/Tune-9338-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/program/Orkney_Reel.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_93381.log 133732 Log file, useful mostly for debugging
Form_93381.log 884 Log file, useful mostly for debugging
Form_93387.log 837 Log file, useful mostly for debugging
Tune-9338-Orkney_Reel.abc 1373 ABC music file with the extracted tune(s)
Tune-9338-Orkney_Reel.ps 41350 PostScript
Tune-9338-Orkney_Reel.txt 1373 Plain-text file with the extracted tune(s)
Tune-9338-get.log 4974 Log file, useful mostly for debugging
Tune-93381-get.log 7098 Log file, useful mostly for debugging
Tune-93387-get.log 3450 Log file, useful mostly for debugging
Tune-93388-get.log 5390 Log file, useful mostly for debugging
These files should be available for 24 hours.