First I emptied my theme folder in my current project. I have put a modified theme.zip inside of the theme folder named "theme-dutch.zip", containing modified logos. Within the "project settings" I have assigned "theme-dutch.zip" as the current theme package. I start deployment and find a theme-dutch folder underneath the web folder within the deployment folder. Once starting my application the application uses another folder which is web>UI> containing 4 themes. The application shows these 4 themes in a picklist, rather than using the theme-dutch theme. Does somebody know the cause of this behaviour and how to prevent this mishap? For instance I do not understand why the web>ui folder contains 4 different themes, these should be 4 default themes generated somewhere else.