[Q] How can I install a theme on my phone? topic

My phone is a Samsung Galaxy Exhibit T599 and it's using jellybean version 4.1.2. I recently rooted it and I tried to install this theme using the latest version of metamorph: http://forum.xda-developers.com/show....php?t=2134382

Buy when I tried to install it it gave my the message: "The Theme you selected is invalid because the theme control file could be missing, or is not correctly written"

Can someone tell me what to do to fix this problem. I'm a really big noob when is comes to stuff like this.

Thanks