Need Help with Source SDK!

Hi, I need help with Source SDK if anybody here uses it. My problem is with Hammer it shows an error at the beginning that says "Failed to load the default scheme file. The map views may be missing some visual elements". It doesnt look the same in the 2d and 3d views as the the Hammer with L4D2 authoring tools. This is what it looks like I've also included some screens with settings on them. If you can tell me how to fix it, it will make me happy.