HB crashes instantly when opened

[renzorx]

My HB crashes instantly when I log in, worked fine this morning, but now it doesn't.
I updated HB to newest version in hope to get it solved, but didn't work either. Tried a complete reinstall, but no dice. Took a screenie of the error, this is with a clean, fresh install, same error.

 

[Thacai]

Taken from the release post for HB:

If you are getting this exception:
Invalid Executor, Styx.Helpers.CharacterSettings threw an exception, or 
Error - Endscene hook failed: Value cannot be null.
Parameter name: EndSceneProc passed to Executor constructor was invalid, or something similiar to that.

Then you need to do this /run print(GetCVar('gxApi'))
open the chatbox in wow copy paste that press enter. 
If it prints D3D9 ure all good if it says D3D11 you have to open your Config.wtf file and edit this row: 
SET gxApi "D3D11"
Make sure it looks like this:
SET gxApi "D3D9"