Audio Units appear blank (white)

Can anybody help me out with some Audio Unit problems. I have installed the vst to au converter and have the mda vst package of plugins. On my MacBook everything works okay. However, on my Intel MacPro (10.5.4 w/ GB '08 4.0.0) the plugins show up under effects and instruments, but are blank or white when I click the manual pencil tab. Sometimes I can change the settings b/c I can hear the changes, but cannot see the numbers or knobs. Another issue is that plugins like the C3 multiband, TAL-bassline, and UpStereo appear blank/white, but the presets work. I'm getting effects but can't manually change them. Sometimes a knob or meter might appear, but mostly just whiteness. Is this a cpu issue or what?
Appreciate the help...
Message was edited by: Lamont Coal

Does the grid of characters look like this?
If not, then try switching your project settings from Mercury Playback OpenCL to Software Only.
Cheers,
Jeff
EDIT: Removed reference to CUDA.
Message was edited by: Jeff Bellune

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<...>
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EDIT: Removed reference to CUDA.
Message was edited by: Jeff Bellune

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    Apple Inc. BRCM2046 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Computer, Inc. IR Receiver
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    Flash Player: Version: 14.0.0.176 - SDK 10.6 Support
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