With 34.2 x86 and the latest HTMLTexture DX11 plugin, the node is red if there is no Mouse node in the patch. It will still render the URL to a texture, but all the output pins such as the sizes are NIL.
Adding a mouse node to the patch immediately makes the node grey with valid outputs, even without connecting it.
Does not show this behavior with 34.2 x64 or 33.7 x86, tested on two machines with Win7 x64. Example patch attached.
HTML-Red-wNoMouse.v4p (3.8 kB)