... but is now just displaying as thumbnails?
This suggests that Adobe Flash Player is not installed and enabled in your browser and that SimpleViewer is using the Mobile Player to display the gallery. Please see the note regarding Universal Playback here. (I see the Flash version of your gallery when I view it in my own browser.)
Please see these FAQs:
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?
You can check if Adobe Flash Player is installed correctly and active by visiting this web page in your browser: https://helpx.adobe.com/flash-player.html
If you continue to experience problems with Adobe Flash Player, try uninstalling it and then reinstalling it from this web page: https://get.adobe.com/flashplayer/
If you are using Chrome, then please check the following:
(1) Open Chrome
(2) Click the 'Options' button (the three vertical dots near the top right)
(3) Select 'Settings'
(4) Scroll down to the very bottom
(5) Click the 'Show advanced settings...' link
(6) Scroll down to the 'Privacy' section
(7) Click the 'Content settings...' button
(8) Scroll down to the 'Flash' section
(9) Select 'Allow sites to run Flash'
(10) Click the 'Done' button at the bottom right
SimpleViewer is predominantly a Flash image viewer and the Mobile Player was designed as a fallback mechanism (so that non-Flash-enabled browsers and mobile devices can still display the images) rather than a fully-featured image viewer within itself. As such, the Mobile Player supports fewer configuration options than the Flash Player.
At least the Mobile Player within SimpleViewer allows your gallery images to still be displayed and viewed even if Adobe Flash Player is not installed and enabled in the browser being used to view the gallery. (Prior to the Mobile Player being introduced in v2.1.0, SimpleViewer was purely a Flash gallery and just displayed a "Flash Player required." message instead of any images at all if Adobe Flash Player was not available.)
If you are looking for a more fully-featured non-Flash image viewer than the Mobile Player within SimpleViewer, then you might like to take a look at another one of our products, Juicebox.
Juicebox is a HTML 5 image viewer which does not use or rely on Adobe Flash at all. Juicebox-Pro has very similar configuration options to the Flash Player within SimpleViewer-Pro and the majority of Juicebox-Pro configuration options are supported on all devices.
For reference, a list of all Juicebox-Pro configuration options can be found here.
We also have several Juicebox demo galleries here.
For more information on the differences between SimpleViewer and Juicebox (and for details of a 30% discount off the price of Juicebox-Pro for existing SimpleViewer-Pro users), please see this SimpleViewer blog entry.
Please also see this blog entry entitled The End of Flash and What this Means for SimpleViewer.
I hope the information and links above help to clarify things.
If you have any further queries, please let me know.
SimpleViewer Support Team