Problem with one click install of phpbb

I’ve been trying to install a forum, I got the e-mail telling me the install was succesfull. Then I went through the set up and clicked on start install, but it didn’t go through. It said there was some kind of error. In the e-mail I got it said to remove two folders from my site ftp, and I did. It still isn’t working. If anybody could help that would be great.

Ok it seems that it cannot connect to the database.