Weird behaviour on override

Hi,

I have a simple page with a Category view. I want three columns. Everything is fine. I am using the default T3_bs3_blank template. But... When I want to override content->category the files are copied to html folder. And you know what? The category view is all damaged...

This is the correct code:

This is the one immediately after the override:

What happened? The override is EXACTLY the same as the default code in Joomla. What is that I am doing wrong?

Joomla 3.3.1
T3 Framework 2.3.0
t3_bs3_blank 2.1.5