pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6942-1161_Miss_Flora_McDonalds_Reel.ps) >>/Users/jc/w/tmp/Tune-6942-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/1161_Miss_Flora_McDonalds_Reel.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_6942.log 1322626 Log file, useful mostly for debugging
Form_69422.log 1122 Log file, useful mostly for debugging
Tune-6942-1161_Miss_Flora_McDonalds_Reel.abc 842 ABC music file with the extracted tune(s)
Tune-6942-1161_Miss_Flora_McDonalds_Reel.ps 37722 PostScript
Tune-6942-1161_Miss_Flora_McDonalds_Reel.txt 842 Plain-text file with the extracted tune(s)
Tune-6942-get.log 4877 Log file, useful mostly for debugging
Tune-69425-get.log 4999 Log file, useful mostly for debugging
Tune-69428-get.log 4148 Log file, useful mostly for debugging
These files should be available for 24 hours.