Vantage error... ATI drivers to blame?

[RADEoN]

I can't run vantage for some reason, it acts like it's going to load, but whenever it tries to I get an error that says "ID3D10Device::CreateVertexShader failed: An invalid parameter was passed to the returning function"

I've reinstalled everything vantage relaated, but don't want to roll back to catalyst 8.9 in case that's not the problem...

Any ideas?