Opening "Classis Skins" will result in a crash

I was about to open my newly-created skin pack, but as I opened the "Classic Skins" tab, the game then freezes, then crashes.

WHY???

Steps to reproduce:

1. Open "Dressing Room".

2. Create a skin or edit an existing one.

3. Select "Classic Skins".

Observed results:

The game freezes for a short moment, the crashes

Expected results:

Classic Skins should open like normal

Note:

Doesn't crash when you don't have a skin pack (or if you have a skin pack(s) purchased from the Marketplace), but IMPORTED skin packs (custom-made or downloaded online) makes it crash. I don't know if its my phone or something...