Unity says I'm not logged in and cannot access Asset Store

Hi, I just downloaded and upgraded from Unity 4.0 to the latest version. Somehow in the new version the AngryBots demo project is corrupted or something, because when I open it, all there is in the whole project is the main camera. Everything else blank.

I am logged in unity website in firefox. I open unity up, and go to windows/asset store/ and a window opens. and it says that I am not logged in. I tried to go to the Asset Store thru Firefox, and from the website clicked “Open in Unity”. Unity opens, and I still get a blank everything except for main camera.

How do I go about downloading the whole AngryBots project again? Thanks for your help.

Have you double-clicked the Default scene in the Scenes folder?