away3d Tan wrong beyond the resources of this resource type to limit the # 3691 error

at flash.display3D::Context3D/createVertexBuffer()
at away3d.core.base::SubGeometry/getUVBuffer()
at away3d.core.base::SubMesh/getUVBuffer()
at away3d.materials.passes::DefaultScreenPass/render()
at away3d.materials::MaterialBase/renderPass()
at away3d.core.render::DefaultRenderer/drawRenderables()
at away3d.core.render::DefaultRenderer/draw()
at away3d.core.render::RendererBase/executeRender()
at away3d.core.render::RendererBase/render()
at away3d.containers::View3D/render()

when lots od model.why?