Keynote 09 quits with error "using SFWordProcessing plugin"

Question

Keynote crashes every time I try to open most of my existing keynotes files. I have been able to open a couple but can figure out why some will open and others won't I can create new files and those seem to be OK. I think the problem arose after I upgraded to 10.6.2, but I am not sure. I am panicked that I can't access any of the dozens of Keynote 09 presentations. Fortunately, I have another week before my next presentation. Any suggestions?
MacBook Pro MacBookPro Intel Core 2 Duo 2.6 GHz 2 GB
Keynote 5.0.3
Mac OSX 10.6.2
Dick Jones

Answer 1

I do not have an answer, but I experienced the same problem yesterday, 11/11. I also recently upgraded to 10.6 and have been using iWork '09 and Keynote 5.0.3. I have had zero problems opening any of my Keynote files until yesterday. Two files were either unable to open or if opened would not display/play properly. Actually I was able to open one presentation but when I clicked on a certain slide the error message appeared, the one about the SFWordProcessing plugin, and the program quit. I re-opened, dragged the "good" slides to a new presentation document and re-fashinoned another slide. I had to completely start over on the other - even the backup would not load.
Also I notice that in "Letter Press", if I select italic, (from the keyboard or the format menu) the entire set of bullets displays vertically, only one letter wide! This may be the case across the board, I don't know.