TEXTURE_FLOAT_RGBA_NV error?

Howdy all. I’m trying to impliment a 32 bit floating point PBuffer. All of the tokens in the program work fine with this change except for
WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_FLOAT_RGBA_NV
in “pbAttribList” used for wglCreatePbufferARB call.
Which when I add that command direction in (opposed to: WGL_TEXTURE_FORMAT_ARB, WGL_TEXTURE_RGBA_ARB)
My PBuffer displays full white screen. I’ve ran a debug on the code, and no error message are being returned.

Does anyone know what might be the problem?
Also, is their a way to test if this is an issue? I’ve inserted the rest of the tokens for the process (GL_FLOAT_RGBA16_NV etc) and they’ve all been excepted fine. Not until I put those two flags in, do i get an error…

Anyone have ideas?
Thanks
~Main