pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2836-Angus_MacKinnons_Hp-D-32-2.ps) >>/Users/jc/w/tmp/Tune-2836-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/reel1/Angus_MacKinnons_Hp-D-32-2.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_28366.log 0 Log file, useful mostly for debugging
Form_28363.log 894 Log file, useful mostly for debugging
Tune-2836-Angus_MacKinnons_Hp-D-32-2.abc 398 ABC music file with the extracted tune(s)
Tune-2836-Angus_MacKinnons_Hp-D-32-2.ps 34172 PostScript
Tune-2836-Angus_MacKinnons_Hp-D-32-2.txt 398 Plain-text file with the extracted tune(s)
Tune-2836-get.log 5166 Log file, useful mostly for debugging
Tune-28362-get.log 3682 Log file, useful mostly for debugging
These files should be available for 24 hours.