Maya z Depth Lens Blur in AE CS5 Problem

Hello,
The lens blur effect with a z depth file mapped in the depth map layer does not seem to work in CS5. Although when I use lens blur in CS4 with the same file, it works. Is there a solution for this?
My z depth file is targa extension and rendered in Maya.
Any help would be greatly appreciated, thanks!

I just tried it, and it works for me. If you upload your project, I can take a look.

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Hi Olli,
"lens blur" übersetzt heisst nach meinem dictionary "Objektiv Unschärfe". Du findest das unter weich/scharfzeichner effekte.
Wenn Du also absichtlich DAS tun willst: "Mit „Verwackeln“ haben Sie die Möglichkeit, jeder Eigenschaft Zufälligkeit in Form von Schwankungen im Zeitverlauf hinzuzufügen." so gibt es dafür diese Adobe Hilfe:
http://help.adobe.com/de_DE/aftereffects/cs/using/WS3878526689cb91655866c1103906c6dea-7ddc a.html
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Thanks for your input guys.
I did have the effect applied to the layer so I then precomposed it as suggested which has worked...... (see attachment)
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CameraLensBlur.png
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Maya z Depth Lens Blur in AE CS5 Problem

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