How to make textures wrap around imported objects?

I originally posted this question in the shader lab but got no responses.

If I import a sphere for instance from sketchup via. playup into unity the texture I apply is always "broken" at the edges. The sphere unity has as a preset object you can use will draw textures correctly. When I want to import unique shapes I've made in sketchup or make a "sky-sphere" by reversing the faces of a sphere in sketchup I run into this problem.

 

It's probably some kind of bug. Blender might be a better intermediary program to go from Sketchup to Unity.