@fredo6 I'm using the latest version of MatSim with LibFredo6 version 15 (latest) but I'm having a problem when selecting materials. When editing Base or Theme materials sometimes it will let me select a material I've been using and leave it alone but other times when I select a texture it will effectively "colorize" the texture and get rid of the actual photographic picture. In this instance HD Brick and Stone that I've imported and used as a texture.