Display Problem

Hello. Latelly I have a problem with Nvil viewport frequent crashes. It usually happens when i accidentally switch to quad view, or resize viewport window resulting with a Fatal Error. Refreshing doesn't help and viewport becomes static, while UI is still responsive. This is displayed massage:

System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   w SlimDX.Direct3D9.Device.DrawIndexedPrimitives(PrimitiveType primitiveType, Int32 baseVertexIndex, Int32 minimumVertexIndex, Int32 vertexCount, Int32 startIndex, Int32 primitiveCount)
   w DigitalFossil.Character.RenderInRetopoModeWithEffectBuffered(FrameDerived frame, Boolean useEffect, Boolean textured, Single effectAmount, Device deviceIn, Material mtrl, Int32 numVertexIndices, Int32 indexStartPos, Int32 primitiveCount, IndexBuffer ib, VertexBuffer vb, Int32 stride, Boolean isForBackFacing)
   w DigitalFossil.Character.RenderInRetopoModeWithEffectBuffered(FrameDerived frame, Boolean useEffect, Boolean textured, Single effectAmount, Device deviceIn, Material mtrl, Int32 numVertexIndices, Int32 indexStartPos, Int32 primitiveCount, IndexBuffer ib, VertexBuffer vb, Int32 stride)
   w DigitalFossil.Character.DrawMeshContainerInRawData(Device deviceIn, MeshContainerDerived mesh, FrameDerived frame, Boolean drawMaterialWithTransparent, Single effectAmount, Boolean forEdgeRendering, Color edgeColor)
   w DigitalFossil.Character.DrawMeshContainerInRawData(Device deviceIn, MeshContainerDerived mesh, FrameDerived frame, Boolean drawMaterialWithTransparent)
   w DigitalFossil.Character.FrameHierarchyFunction_DrawFrame(FrameDerived frame, Boolean drawMaterialWithTransparent)
   w DigitalFossil.Character.RenderBegin()
   w DigitalFossil.Character.Render()
   w DigitalFossil.BaseGraphicWindow.RenderObjectsInOrder(ArrayList charactersToRender, Boolean solid, Boolean transparent)
   w DigitalFossil.BaseGraphicWindow.RenderObjectsInOrder(Boolean solid, Boolean transparent)
   w DigitalFossil.AnimationDesign.AnimationDesignGraphicWindow.RenderObjects()
   w DigitalFossil.AnimationDesign.AnimationDesignGraphicWindow.Render()
   w DigitalFossil.BaseGraphicWindow.Render3DEnvironment()
   w DigitalFossil.BaseGraphicWindow.FullRenderDetail(Boolean forced)

Could it be related to GPU drivers that I recently updated?

I can't tell exactly what caused that. It is very likely graphic card related. Does it happen all the time?