Keynote Files Can't be opened
Hello!
Since yesterday I'm not able to open any keynote files previously saved.
I'm running the latest version 6.5.3 on 10.10.3
Even if I create a new file and save it and then close it. I'm unsuccessful to open it.
Any idea what I could do to solve this problem. Need to work on a presentation since yesterday and no luck.
Thank you for your help.
OS X Yosemite (10.10.3)