WoWInterface - How do I arena frame? :(

So I made them before somehow... But I don't remember how... A virus ate my laptop and I had to system recovery, so I'm pretty much remaking everything again. All that's left over are arena frames and I've put together what I thought would work, but it doesn't. Tried to download unlimit's pandora, copy those settings over, but those don't work either and are broken, apparently x_x

What I have down:

Player_Arena_Window

Frame: None

Design: Player_Arena_Design

Data Source: Secure Set
Roster Type: ARENA
Set Class: File Set
File Set: (A filter set here with Arena as the drag and drop option)

Arena Layout
Expand Vertically
Fill Vertically
x Auto hide/show this window when empty/nonempty
x Do not show Unit Count in title

Mouse Bindings
Bindings_Priest
Hotspot: arena

Repaint: Latch
x Period (in seconds) [0.01]
Default paint mask [0]

And under Player_Arena_Design
I made the design and tested it out with my party/raid frames in replacement, and they worked perfectly. So the problem is the connection between the window <->design.

Any ideas?? =(