I noticed when looking at another user's file, (using HDA2018)  how terrible his brick texture looked. So, I started a new plan, and drew a brick wall.  I changed the default brick texture to Red Brick 4 (library, HDA2018), and the pic on the right is what it looked like. Terrible! I then imported red brick 4 (as a new material) from the HDA10 library, and put it on a wall (pic on the left).  It looks just like it is supposed to (library preview image). Most of the other brick textures in the HDA2018 library look just as bad.   Any guesses why?