In the sv-builder I had disabled the "use flash"-button. Does this matter?
Yes. If 'Use Flash' is set to FALSE, then SimpleViewer will use the Mobile Player to display the gallery on all devices and in all browsers, regardless of whether or not Adobe Flash Player is available.
If 'Use Flash' is set to TRUE, then SimpleViewer will use the Flash Player to display the gallery if possible and will fallback to using the Mobile Player if necessary.
The Flash Player and Mobile Player differ greatly.
Please see these FAQs for more information.
When I view my gallery I see a grid of thumbnails, not the layout I specified. Why?
The mobile player layout does not match the Flash player layout. Why not?
The Mobile Player supports fewer configuration options that the Flash Player (please see here for a list of options supported by the Mobile Player).
languageCode is supported by the Flash Player only.
SimpleViewer Support Team