Keep note doesn't launch anymore

[GoogleCodeExporter]

What steps will reproduce the problem?
1. I try to start Keepnote
2. Keepnote opens for 1 or 2 seconds and shows a window with the title "Opening 
Notebook" and a text "Loading" with a green bar loading.
3. At this moment, the program stops and it's not possible to access Keepnote.
Any time I try this, I have the same experience

What is the expected output? What do you see instead?
Keepnote should open but it doesn't open.

What version of the product are you using? On what operating system?
I don't know the version of the product I'm using, because I would need 
Keepnote to fully launch to know it. I'm using Windows 7.

Original issue reported on code.google.com by [email protected] on 28 Nov 2013 at 5:19