Thomas Strausz wrote: >> Can you check if such a line is there? If not, the bcf file is not added >> to LyX's dependency tracker and thus biber is not issued. > > No such line is to be found in the log file, I'm afraid.
OK, we know the reason then. Please use the preamble workaround for the time being (it is harmless). We will fix this problem for LyX 2.0.2 in one way or the other. Thanks for your investigation. Jürgen