Critical error l2 high five spoil guide

I have all latest update from RpG Updater, i have GF client  and Cloack patch as well, but  i have crit errors.

2011.4.2 13:40:39
OS : Windows Vista 6.1 (Build: 7601)
CPU : AuthenticAMD  AMD Turion(tm) 64 X2 Mobile Technology TL-52 @ 1598 MHz 2046MB RAM
Video : ATI Mobility Radeon X1600 (630)
PosCode : LS8(83) 11852:183503:-3561 2/1 [391]

Assertion failed: Size > 0 [File:.\D3DResource.cpp] [Line: 1222]

History: FD3DVertexStream::Cache <- FD3DRenderInterface::SetVertexStreams <- USimulationMeshInstance::Render <- UMeshComponent::Render <- UMeshContainer::Render <- FDynamicActor::Render <- Actor <- TranslucentRendering <- RenderLevel <- FLevelSceneNode::Render <- FPlayerSceneNode::Render <- SceneNodeRender <- Draw <- UGameEngine::Draw <- UWindowsViewport::Repaint <- UWindowsClient::Tick <- ClientTick <- UGameEngine::Tick <- UpdateWorld <- MainLoop



Plz tell me what it is beacue its very annoying