Rust won't start, stuck on "Running self check"

So i haven’t been able to start Rust. It launches, but stops and just sits there at “Running self check” forever. Its been sitting for 10 minutes. The task is still responding, but it wont get past the self check.

I have tried almost everything. Restarted Rust a lot, Verified game cache, Restarted steam, restarted PC, Verified again, reinstalled EAC, verified some more, redownloaded Rust, updated my drivers, prayed, ran steam as admin, tried some more verifying, browsed a ton of forums, nothing works.

So any help would be GREATLY appreciated. The legacy version works fine, btw.

[editline]7th March 2015[/editline]

Also, I am running Windows 8.1, 64 bit, 64 bit
CPU AMD Athlon X4 750K Trinity Quad-Core 3.4GHz
GPU Radeon R9 270X 2GB 256-Bit GDDR5
RAM 8 GB Corsair