(As Ryan knows :-0 ) I have been having difficulty with getting Spout working on my Dell laptop (with Intel Iris and Nvidia Quadro cards using Optimus technology).

The solution is to run the SpoutDXMODE.exe in the DXMODE folder within the Spout Program Folder. This allows you to choose which of your graphics systems Spout runs on. Once I'd run this program and chosen the Nvida Card all Spout textures were then fed successfully into Isadora.
And more importantly the Kinect Processing sketches worked too!