For those who have problems with materials and lights in Su2Pov, the following:
As previously documented regarding placing the lights: First be sure that a copy of the Su2Pov folder is in the Su components folder. Use the <esc> key after selecting a Su2Pov light fixture to produce a cursor that will locate the light.
The "edit Pov-Ray Finish" menu is available if you start Su by selecting a project.skp with your mouse. If you start the program before opening a file, the menu may not appear. Once the program is started in this way, the menu is available, until you shut down. The dos screen flashes from time to time when the feature can not be accessed. Make sure that you edit component or group for access to a material.
Aside from always starting the program in this way is to make a shortcut of a untitled.skp, rename it SketchUp, and change the folder icon to the Su icon, place the shortcut where ever you start your program from. The drawback to this is that you can not start Su by dragging a file into the shortcut.
If anyone finds exception to this, let me know and I will edit this post.