I have a big Minecraft problem?

When I open Minecraft launcher, the loading goes well until that point:

I have a big Minecraft problem - 1

After that, I can't go any further: as if a file is missing, but if so, I don't know which one.

Please I need help, I love to play at Minecraft!

Delete your minecraft folder. Are you on a mac or pc? If you are on a pc search in start menu: run. Than open that and type: %appdata% and enter that. But if you have any save folders remove those and but them on your desktop screen so they don't get deleted. Than delete the whole minecraft folder.

Yup same as the above answer, delete the folder completely (it will be called.Minecraft) and them re download it, you can download Minecract as many times as you want don't worry, if that doesn't work then contact mojang support.