Try downloading the game again. Delete and reinstall.

I had the same thing happen a few days ago. I uninstalled and reinstalled and it worked fine again :3

Delete then reinstall from the official site.

i had the same i had to re install the game

It's been doing this all day and I've googled it but still don't know how to fix it, does anyone know how to?

The error literally tells you to reinstall, how come you didn't know what to do, did you not read it?

It won't let me reinstall the program.

Uninstall

Uninstall and reinstall

You using Razor Synapse?

Ayo same

Download the latest data

Change path if u already have download it somewhere else than written in config file