What should I do if my app crashes on startup?
Q: What should I do if my app crashes on startup?
A: Many iPhone and iPod Touch users seem to have experienced this problem when using any kind of application. It is not an application-specific error but seems to be a problem with Digital Rights Management (DRM) that is embedded in each iPhone app installed via the App Store.
Here is a solution that helps you to fix the crash problem while securing your data.
To do so, Control-click or right-click the iPhone or iPod touch icon on the left side of the iTunes window and choose Back Up.
2. Do a factory restore
To do so, click the iPhone or iPod touch icon on the left side of the iTunes window and choose “Restore” below "Check for Update" menu on the center of screen.
After restoration, iTunes will ask you whether you want to sync your device with a backup. Choose yes and you’re done.