I have a problem with textures for the ground plane (I made this new file only for demonstrating the problem). File and texture map:
Texture problem.zip (4.4 MB)
I opened the ground plane panel and chose a material from the library (Architectural / Floor / Wood / Parquet dark reflective). I made a cube (1000 x 1000 x 1000 mm) and zoomed out (zoom extents). I deleted the cube -> the texture disappeared and the viewport turned white. Undoing delete makes the texture reappear.
I then switched to the texture in the zip-file (boards+03_d100) and adjusted the size at the bottom in the ground plane panel (texture mapping section) from 1 to 10. Rendered view looks ok, but raytraced view shows the old size (1) -> different mapping in rendered and raytraced views with the same bitmap/size.