Hi, There seems to be a mistake in the org-mode Ubuntu 16.02 packages.
For beamer, if I C-c C-x p to add a property, one of the predefined options is: :BEAMER_act(Act): 1 But it should be :BEAMER_act: 1 The former is ignored in the generated LaTeX. The latter produces a correct overlay spec. Is that still the case in the most recent org release? If yes, I'd like to file it as a bug report. If not... I guess it's time to dump the Ubuntu packages. hjh