The app crashes every time I open the application up.

When I open up Minecraft: Pocket Edition on my Windows Phone, it stays on the Mojang screen, then it crashes. I tried turning off my phone then turning it back on, turning off the Wi-Fi, and uninstalling the app then reinstalling it but it keeps on crashing. Also, I put the version as 1.1.4.51 but right now the version is 1.1.5.