This sounds like it could be a bug. Does the texture change as soon as it's saved to the library? In other words if you save it to the library then create a new object and apply it, is it messed up. Or does the mess up come after Bryce is shut down then launched again. If the mess up comes after Bryce is shut down, then launched, try exporting the material, before Bryce is shut down, and see if it imports ok. This kind of sounds like the sky lab soft shadow bug, you turn it on, it turns itself off, or you turn it off, and it turns itself back on. Basically it sounds like some of the material properties are converting back to a previous state.

Stephen Ray