pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-40267-4281_Lord_Airleys_Reel.ps) >>/Users/jc/w/tmp/Tune-40267-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/4281_Lord_Airleys_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_40267.log 843531 Log file, useful mostly for debugging
Tune-40267-4281_Lord_Airleys_Reel.abc 746 ABC music file with the extracted tune(s)
Tune-40267-4281_Lord_Airleys_Reel.ps 36967 PostScript
Tune-40267-4281_Lord_Airleys_Reel.txt 746 Plain-text file with the extracted tune(s)
Tune-40267-get.log 4696 Log file, useful mostly for debugging
These files should be available for 24 hours.