Lense Effect Problems

[Cyberphil]

Hey guys,
For the past few weeks I have been trying to use a lens effect on an omni light in one of my scenes for a nice sun look. I have done this numerous times before with no problem at all, but this year it is not seeming to work. I add the effect to the omni and put the parameters of the effects that I would like and press render, but an error message shows up saying:

Unsupported Render Effect
The following render elements are not compatible with the bitmap format selected for rendering. The selected Bitmap format is:

32 bits per Channel Floating-Point [RGBA]

lens effect.


Now i know i must be doing something wrong, but i just can't figure out what.

Any help would be amazing!

Thanks a ton!
Phil