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No matter if I install the expanded multiplayer to a separate dir. or not the error comes up with both of them. The other unreal games are working fine. What am I supposed to do about this.

LockRect failed: D3DERR_DEVICELOST

History: UD3DRenderDevice::ReadPixels <- UD3DRenderDevice::Present <- UGameEngine::Draw <- UWindowsViewport::Repaint <- UWindowsClient::Tick <- ClientTick <- UGameEngine::Tick <- UpdateWorld <- MainLoop

Happens with LOTD RTFG also