ive been having trouble getting the ping pong direct x 10.1 demo from ATI to work. I have vista x64 with service pack 1 GPU= HD3870 I also downloaded and installed latest version of directx with march 2008 updates. Here is the error it gives: === Sushi 3.1 Build 183 (Compiled on Mar 12 2008 14:00:21) [19:14:26] Unable to get audio driver name: No errors. [19:14:26] 5:4 monitor detected [19:14:26] Screen resolution is 1280x1024 [19:14:26] DX10.1 init failed. Unable to fall back to DX10.0 because this demo requires DX10.1. .\SuEngine.cpp(298) : [19:14:26] CRITICAL: Error creating 3D window. [19:14:29] Peak memory usage: 1.01 MB [19:14:29] Current memory usage: 0.94 MB seems it cant get directx 10.1 to activate for some reason. I have all the necessary hardware/software to run the demo. Any helpful ideas?