Um, code would be nice... We need to see *what* you are trying to do and then maybe we can help determine the cause...
Without code, you won't get much help as we have no idea as to what you are trying to do...
From my experience, I've never seen any of these errors (except some access violation errors relating to objects that I haven't yet created - but even for those, we need to see some code)...
Quote: "
Failed to get device caps
Failed to find valid stencil buffer
Unable to create device
"
As for these errors, are you sure you have the correct version of DirectX? What version of GDK are you using? What other libraries are you trying to use?
We need more information if you want any help...
JTK