Thank you for your help! However I'm using Unity 4.3.4, and it isn't the latest version of Unity 4. I know on the asset store page it says "Requires Unity 4.6.9 or higher.", but is it possible to use it with anything lower than 4.6.9? Or is there another version of NGUI that I can buy and download to work with the older versions of Unity? Thanks again for your help.