Gallery won't open on Samsung Galaxy S4

[Rikku Watro]

When I tap on Gallery, it seems like the menu screen is still there but is frozen. When I clear running apps by long pressing the menu button, I am able to move the menu screen. I tried to enter the Gallery many times but the same thing happens! Clearing the cache or force stopping didn't work, please help! Very bad problem...

 

[Rikku Watro]

Clearing cache then clearing data didn't work either