A Very Strange Unity3D Problem

Unity Engine
1

Hello people.

I have no idea what happened, none of the 3D models I used for my upcoming game is visible in the game view, it is visible in the scene view,though. What reasons could cause this strange and frustrating problem? I’ve searched the net and I have found nothing. Please help… I’m running out of time for this project.
However,when I set “clear flag” to “don’t clear” for the main camera, those 3D models will appear but no skybox would be visible. That is quite extraordinary.

I have Unity3D v5.0.0.f4 , though.

2

Selected all dependencies and export my project as a package, then I re-import them in a new project. Problem solved, Conclusion: The problem must be related to the old project settings since project settings wont get imported along with the project files when imported in a new project in form of a UnityPackage file.