I am having a lot of trouble with Radiosity. I can get the actual process to work fine, and get nice shading and whatnot. But, when I go to Render with F12, Blender leaves out about 90% of my meshes! They are there when I am editing them, clear as day, but they don’t show up in the Render, and this is just after I have used Radiosity. I thought it was my version of blender, so i tried the same file, which was my computer desk, at school - the render after Radiosity ALWAYS only rendered the wall and mouse button and NOT the tons of other meshes in the same scene, like the desk, monitor, etc. I have no idea how to fix this - the model is at http://keikorner.cjb.net/computer.blend if that helps any.
And by the way, I have also already tried moving everythign into one layer before I use Radiosity. It doesn’t make a difference - some meshes are simply not showing up for me after radiosity!