EAC Client Cannot Be Instantiated!

When I try to open DBD right before the main menu, an error display "EAC Client Cannot Be Instantiated" and forces me to quit the game.

Does anybody get the same error as I do? If so, what were you doing before?

It was working perfectly until I left my computer using SingleBoostr for 3 hours, came back and got this error when I launched up the game. I'm using the savefile from MikeV2 but other than that. No bypass, no hacks, nothing. I'm using the perfectly fine original game file.

Methods I've tried:
- Restarting computer
- Uninstall and Reinstall game files
- Perform an EAC Reinstallation
- Verifying the Integrity of game file via Steam

None have really worked. I have a brain so I did backhand research before makinga post, I've look on the offical forums, googled and found some people in the same situation as I am but still no luck.

I hope someone can recreate this situation or make an suggestion to what I could do. Thanks! I'll keep an eye on this thread almost every hour.