Compiler error - how to fix it?

I'm having a compiler error. All my scripts are working fine and the only thing I changed is I imported a model of a dog. It had less than 300 faces. I do not know what to do now. Unfortunately, I have tried starting a new project with the assets. I don't think that it would be nice to start from scratch. I have had this problem before on earlier versions of unity. I currently have version 3.4.0f5. Thanks!