"Shader fallback path currently unsupported"?

[Ink]

When I try to run the alphas, I get this error message first: "Shader fallback path currently unsupported" Then I click "OK", and this one comes up: "On line 716 of textures.cpp: invalid enumerant"

I click OK, and the whole thing shuts down.

It's not really a big hassle, seeing as it's only the alpha versions, but I hope it won't happen with the finished game!

Any ideas on how to solve this, though?

[TheBigCheese]

It's very likely that your graphics card is unsupported at this time.

You might try installing the latest drivers, if you have not updated your card in a while.