Unable to click on objects in the editor scene view after using a custom shader?

Hi I'm having a little difficulty and was wondering if anyone knew how to fix it?

I found an outline shader to add a little bit of depth to my models. The shader itself works fine and there isn't an problems with it visually.

The problem is that after the shader has been applied to an object it is not possible to then click on the game object in the scene view.

Essentially, defaultshader = clickable - outlineshader = unclickable

Here is a gif that shows the basic idea of what is happening.

http://i.imgur.com/Qw1kqUH.gif

I got the shader for the outline in here , from the unity forums.

Cheers if anyone knows how to fix this. It isn't a end of the world bug, just a bit annoying.