I completed the Space Shooter tutorial just fine and everything in there still works fine. Also importing objects from Blender into it gives me no problems. But when I start a new project everythin I import or even create within Unity (a cube for example) is pink. Textures of my objects are there just pink. Nothing suggested on answeres worked so far. No error messages displayed.
Win 7 64 Bit, Amd Graphics Card Radeon HD6850. Up to date drivers.