Sequencer: can't set "look at actor" and save the sequence

I’m trying to render a teaser for our game using sequencer.

For some of the shots, I need to keep on looking at the character.

The problem comes when I save the sequence. I get this message:


Apparently, the engine thinks the actor is in another map, while it obviously is in the same and unique map I’m working on right now…
The solution I’ve found so far is to delete the actor I’m looking at, and save the key for the lookat offset…Every time I want to render, I have to add the actor and proceed to create the movie after setting everything up again.