Calendar app not working after update

[kjsooraj]

Windows phone calendar app is not opening after 8.1 update 1.
Start screen tile is not active

 

[Srdjan Cupac]

Same problem with OneDrive app

 

[kjsooraj]

Kindly ignore.. Calendar app got working all by itself.

 

[harryaro7]

In my case the apps tile is showing wrong date..i restarted the phone to fix it