Camera Problem

[bracus]

Whenever I press the button on the side of the phone to open the camera, It says- the file 'photoslides' cannot be opened. either it is not signed with a trusted certificate, or one of its components cannot be found. If the problem persists, try reinstalling or restoring this file.

How do i restore it?

[Hawk]

Go to Start > Settings > Buttons. Here you can customize the action for the two buttons on the side. You can select any application or phone action.