Admin Export Images from Gallery
Since this thread is going on five days without being resolved, we will go ahead and put in a support ticket...
We've been short staffed here for the last 1.5 weeks - I've been out of town and so has Michael.
If it shows as being configured, my guess is you're using a REALLY old version of a custom gallery template - the buttons at that location are controlled by the core now - not a template, so as long as you reset caches it should show if enabled.
You also need to make sure the ACP -> Profiles -> Image Galleries - Global Config -> "Allow Original Download" is CHECKED.
Let me know if that helps.