Skin Blackening Problem

Put the summary of the bug you're having here

What I expected to happen was...:

My custom skin to be able to be used.

What actually happened was...:

My skin turned completely black, and when I try to join game, skin is invalid or corrupted.

Steps to Reproduce:
1. Go to skins
2. Choose new custom skin
3. Choose a valid, custom skin

4. Click whichever style

5. Skin turns black