Texture Tear

Hello. First post for me here. Excuse my English, I am from US. Public schools. Anyway. I am going to be using Unity in college this fall and a friend and I decided we’d get a jump on it by creating a game we’d been talking about. However, whenever we go to use a shader besides the standard diffuse, this happens:

What is this? And more importantly, how do I get rid of it?

Ok, did a bit more testing, and it seems to be limited to the parallax shaders. Still not sure what might cause such a thing.