Can't see text-chat.

In order to see text-chat, I have to open console. The box that ordinarily holds the text isn’t there. So far, I’ve verified integrity of game cache. This has been driving me nuts.

You have an addon doing this. List your addons please.

Same problem here.
It worked fine a few weeks ago, I did not install any addons by now.
Any help?

Probably something you downloaded from a server. try a full gmod reinstall