Hi, I believe that the Save & Apply button of the Preferences lights up or doesn't, when it should or shouldn't: 1) It doesn't when I type a new Backup path or LyXServer pipe in Inputs->Paths, but it should! 2) It does, when I select a line in the list of the LyX objects in Look & Feel -> Colors, although it shouldn't because I do not make any changes. Rob.