Is there a limited amount of extensions available?

[spoiler]I have been trying to get the hole effect to work in my game and it cuts the screen in half diagonally. I put the example frame in my game and modified that in the same way and that worked, so I was wondering if some extensions or something were messing with the effect, or if there was something I am missing?
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By the way, I have the OINC client, String Parser, Text Blitter, and Layer object in this frame and I am using the effect on a layer which the only thing on is a quick backdrop.

It seems my problem is Direct3D 9, not the Hole effect. Are the extensions causing the problem?