pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6337-1093_Sir_Ronald_McDonalds_Reel.ps) >>/Users/jc/w/tmp/Tune-6337-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/1093_Sir_Ronald_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_6337.log 1196175 Log file, useful mostly for debugging
Coll_63373.log 1326841 Log file, useful mostly for debugging
Tune-6337-1093_Sir_Ronald_McDonalds_Reel.abc 802 ABC music file with the extracted tune(s)
Tune-6337-1093_Sir_Ronald_McDonalds_Reel.ps 37363 PostScript
Tune-6337-1093_Sir_Ronald_McDonalds_Reel.txt 802 Plain-text file with the extracted tune(s)
Tune-6337-get.log 4874 Log file, useful mostly for debugging
Tune-63370-get.log 4362 Log file, useful mostly for debugging
Tune-63372-get.log 4472 Log file, useful mostly for debugging
Tune-63377-get.log 4534 Log file, useful mostly for debugging
Tune-63378-get.log 86355 Log file, useful mostly for debugging
These files should be available for 24 hours.