Unsolved: unable to open file because it isn't a valid Keynote document

I'm trying to open a presentation I made some time ago, it is a .key file I used to open without any problems. Now the message appears:
"Unable to open file because it isn't a valid Keynote document".
I tried the solution described here, but it didn'd work: i change extension to .zip, unzip it and there is no index file. There are only pictures from the presentation in .tiff
I also sent the file to my friends and they had the same problem opening it. It's very strange, I've successfully opened it before. And the problem is only with THIS file!
Please help me out!

Have you tried to create a new Keynote Presentation? Do you have another previously saved Keynote file you can try to open? These will make sure it is a problem with this specific presentation and not the whole program.
Try to delete the Keynote Preferences. They are located in the folder Macintosh HD>Users>your username>Library>Preferences and titled com.apple.iWork.Keynote.plist.
Your profile shows that you are still on Mc OS 10.6.6, is that true? You might try to update to 10.6.7 as I believe that there was a font issue fixed in this update (I don't know for sure since I am still on 10.5.8).
Try those and report back and we will see what we can come up with.

Similar Messages

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    Hi there,
    As you see in the heading, I am getting the error "Unable to open file because it isn't a valid Keynote document". There has been a number of threads on this and there seems to be a usual work around that works in many cases, by changing the file extension to .zip and then looking for the index file and making some more extension changes...unfortunately, in my case (and it also happened to others), there is no index file, so the usually suggested solution doesn't work...Can someone please help? I am working on a tight deadline and would like to try and recover the file.
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    Have you tried to create a new Keynote Presentation? Do you have another previously saved Keynote file you can try to open? These will make sure it is a problem with this specific presentation and not the whole program.
    Try to delete the Keynote Preferences. They are located in the folder Macintosh HD>Users>your username>Library>Preferences and titled com.apple.iWork.Keynote.plist.
    Your profile shows that you are still on Mc OS 10.6.6, is that true? You might try to update to 10.6.7 as I believe that there was a font issue fixed in this update (I don't know for sure since I am still on 10.5.8).
    Try those and report back and we will see what we can come up with.

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