I understand that you are getting a D3D9 error when launching the game "Smite", I will be more than glad to help you.
Regarding this issue, To better assist you with your request, I will need to check some information about your computer. Please follow these steps:
1. In the keyboard, press WinLogo key + R.
2. In the Run box please type dxdiag and hit Enter.
3. Click on Save All Information (save it in your desktop).
4. Attach the report to this thread.
Once I have all of the information I will try to replicate the issue you are currently having to see what could be the problem.
Thank you very much for patiently waiting,
Today during the day I tested the "Smite" game with one of the systems we have and there was no issue whatsoever. The launcher installed the pre-requisites and then opened the game with no error. I was using the same driver version that you have as well as Windows 7 64-bit.
Up to this point, what I could recommend you to do is to download the launcher again and re-install it. But first, uninstall everything from the computer, make sure there are no "High Rez" files remaining to make sure that nothing gets in the way of the new installation. Afterwards, download the launcher and allow it to install the game and pre-requisites.