If you double-click the slideshow button, it should open it up (in the Gallery). This is a known issue with Firefox.
Thanks for reply - but it doesn't work. It has been always OK over the last 3 years and suddenly since yesterday it is not responding (it works well in IE)
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SmugMug Hero & CSS Monkey
https://help.smugmug.com/get-started-with-customization-SkgwJ4rM
Thanks for reply - but it doesn't work. It has been always OK over the last 3 years and suddenly since yesterday it is not responding (it works well in IE)