pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4821-1243_Gordon_Castle.ps) >>/Users/jc/w/tmp/Tune-4821-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/1243_Gordon_Castle.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Form_48212.log 879 Log file, useful mostly for debugging
Form_48213.log 1076 Log file, useful mostly for debugging
Tune-4821-1243_Gordon_Castle.abc 838 ABC music file with the extracted tune(s)
Tune-4821-1243_Gordon_Castle.ps 38110 PostScript
Tune-4821-1243_Gordon_Castle.txt 838 Plain-text file with the extracted tune(s)
Tune-4821-get.log 4581 Log file, useful mostly for debugging
Tune-48214-get.log 7770 Log file, useful mostly for debugging
Tune-48218-get.log 4048 Log file, useful mostly for debugging
These files should be available for 24 hours.