Started out with "Bad Version, Rejected Connection" but now I'm just digging a hole.

[skulkingfox 8]

Alright, I'm absolutely puzzled. I started playing Day Z on Steam a few months ago, stopped for about a month and decided yesterday to catch up on all of the patches I've missed out on. All my files are up-to-date, but (I think) I initially had the wrong Launch Options (-mod=@dayz -nosplash) so this led to a "Bad Version, Rejected Connection" message.

At this point a friend of mine suggested that I download the latest Arma 2: OA Beta patch (94444). However, having received the same issue after downloading said file I sought out this guide and followed the steps listed there. Finally, I changed the launch options to:

-beta=Expansion\beta;Expansion\beta\Expansion -nosplash -mod=@Dayz

This caused the expected "Error creating Direct3D 9 Graphical Engine" message, so I did as the guide instructed and verified the integrity of the game cache but now this error message still persists!

So, what have I done wrong here? Here are some screenshots of my directories.

Here's the Root ArmA 2 OA Directory

Here's the Day Z Directory within

Specs: Windows 7 Home Premuim (64-Bit)

Direct X runtime version 11.0

GeForce GTX 560 Ti