I have:
zc 1.3.8a
ML_ZC1_3_8_EXTENDED_BOOK_TYPE_V_4_LANGS_ISS2
ceon_uri_mapping_seo_3-2-4
multisite_module_0-4-2

My problem: When I do a search for "authors", then no result is displayed. I looked at the sql in the "book_authors_filter.php" and found out, that there is no result displayed because the table "books_to_authors" is empty!

How do I geht some data into this table? I do have authors, I do have books, and of course, I filled the author(s)-field when I added the book. Is this not enought?