Try dropping the tracks onto the Drop Station in the upper left of the program window - WAV or AIFF should work best for Logic.

Dragging directly from the tracks in BB into certain DAWs doesn't always work - this is because the file that you're dragging doesn't "exist" yet, and what you're actually dragging is the "promise" of a file. Apps like Finder tend to work fine, but some DAWs don't like that.

I work here