When I click on the festive mash-up pack texture pack, nothing changes in the menu. Then when I load a world still nothing changes. I've tested it and every other pack works, just not that one!

For the skins, I have also tested it. I changed my skin and asked my friend if they could se it and they said that all they could see was the Steve skin. They changed their skin and all I could see was a Steve skin. It has been like this ever since the recent Hotfix.