Every time I go onto Minecraft it crashes!

Evey time I go onto Minecraft it crashes!

Every time I go on Minecraft it loads with Mojang, then Minecraft but as soon as it reaches the aquatic screen it crashes.

 

It did work one time when insperation island came out but after I purchased it An did went back, it crashed.

 

I hope someone has a solution.

I've tried searching the internet, YouTube and the bug tracker but nothing has come up.