When creating a Gallery Object - Effects are not possible to choose 
Autor: Thomas A.
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The option Effect is not possible to use in the Gallery Object pane. Why.
Please see attached screen shot.
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Hello Thomas,
It works on slideshows and galleries (horizontal and vertical) but not on thumbnails...
J.P.
...
For effects on thumbnail photos, you can use the pop-up display box.
Sorry for the screenshots, I've only FR version ;o))
J.P.