Minecraft: Skin loading error (1.8.0.13)

Hello, my name is João, I'm Brazilian and I came to report a bug that has been happening to me in this last version of the game (1.8.0.13) Basically, when I try to change my skin, an error message appears saying that I have to verify my connection to the internet, which does not make sense, because I have internet (otherwise I would not be sending this email! XD Lol) Anyway, this does not occurred in previous versions. I hope you help me on this, thank you already

Edit: 
this guide is loading infinitely

Edit2: Some friends related me that their game is crashing when they put their skins (it occurred on mobiles)