I hit the play button and Caesar IV crashes immediately with the following exception.

Unhandled Exception: No Valid Devices were Found.
Type Class TMill::Engine::D3D::NoValidDevicesException
File C:\C4Patch\Source\Engine\D3DDeviceManager.cpp
Function: TMill::Engine::D3D::DeviceManager::FindValidDeviceSettings
Line: 1364

Windows 7, Intell I5 processor with 32 Gig Ram