It seems that I'm no longer able to play on any servers, because of this error. I have reinstalled the game and joined all possible server hosting web pages and non web pages. But it says the same thing, if someone could help me on this matter I would be most grateful.

What is your resolution in the config file?

Hmm, AFAIK, AoS doesn't support 1440X900, which just happens to be my resolution.
Is 1440X900 your resolution?

xres 800
yres 600
No, it was working fine before though, until today.
Edit. My screen resolution is 1280 by 1024

Did you try re-installing AoS?

As I have said above, yes I did, multiple times to be exact.

I know this sounds silly - but have you tried restarting your computer?
It's possible that part of your driver had crashed/failed, which a restart would cure.

Actually that just might be the cause. My sister did something on this computer that crashed one of the main drivers, I wouldn't be surprised if she did it again. I'll go restart my computer then retry.

It works now! Thanks.