I updated my CS3 yesterday to the latest release, 2.3.1(8). All but two of my LGB locos lost the links to their display icons. Märklin created a new "LGB" sub-folder in the lokicons folder. The additional folder level broke the links. It took me awhile to find and re-establish all the icons. I should note that icons (pics) I had uploaded myself for decoder equipped wagons and my two stations were unaffected.