I'm experiencing a similar issue, however, regardless of whether I am re-installing my festive pack (2016 Festive Mash-up) or re-installing Minecraft.
Hello, I did use the 'Create this World' button on the Marketplace page. I additionally switched to the old UI, and I still ended up with the same result.
I'm experiencing a similar issue, however, regardless of whether I am re-installing my festive pack (2016 Festive Mash-up) or re-installing Minecraft.
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