Cg fails with 1.0 cuda display driver

With the latest display driver for CUDA, I find that Cg no longer works on my system. I have tried several of the examples bundled with the Cg toolkit, and each fails in the same way.

When calling cgGLSetOptimalOptions, I get the error:
CG ERROR : The profile is not supported.

Examples Tried:

OS: Windows XP SP2
Driver: NVIDIADisplayWin2KXP(162.01)_Int
Card: 8800GTX

Everything seems to work fine for me. I’m running Kubuntu Edgy with cuda 1.0 and the latest driver 100.14.

With no changes (other than a reboot this morning) cg started working today. Hopefully this issue won’t crop up again.