LoginSecure Slideshow: Missing theme settings when switching between themes.
Each theme has there own specific set of settings attached to it. If you had set up, for instance, the default theme and then switch to another theme then all settings related to this default theme are no longer relevant for the other selected theme.
Due to this, it can look that some themes have settings missing but in fact, they are just hidden and upon switching back to the 'original' theme they will be visible again.
KB Article: https://loginsecure.eu/helpdesk/knowledgebase/view-article/68-loginsecure-slideshow-missing-theme-settings-when-switching-between-themes