Help with glass/bubbles

[Eaton]

Hi
I am messing around with some bubbles. I get a strange effect when i have a box with another glass material behind the bubbles.
I just want to b able to look trough the bubbles at another object with a glass material applied to it.
I don't know why this is happening. Can someone please give me some advice
Please see the image below, i also added the scene. max 9
E

http://www.500mills.com/bubles.jpg

http://www.500mills.com/glass_bubbles.zip

[aphex79]

increase your max depth..

[Eaton]

Thanks aphex79
What a noob i am

[aphex79]

been there, done that