This thread is TEN YEARS OLD!
Please start your own post. It’s free.
How to report your problem productively in the Unity3D forums:
How to understand compiler and other errors and even fix them yourself:
If you post a code snippet, ALWAYS USE CODE TAGS:
How to use code tags: https://discussions.unity.com/t/481379
Also, please consider this:
https://www.youtube.com/watch?v=1kUlD7OWpLM