MyBB Community Forums

I upload the forum, and install all things. But, when i go to post a new thread, i write the title and the description, and it said: "An unknown error has occurred" and i cannot post!

Help meee

Can you make sure all files, especially the language files, are uploaded?

I put the english language and it ocurred the same error, but with other sentence:

"Authorisation code mismatch. Are you accessing this function correctly? Please go back and try again."

What can i do?