Sorry, I can't send a patch (until Monday -- really screwy email, connecting via W/NT, but working on a non-networked Linux box). Solution: in the function "fume-find-next-latex-section-name", in each call to concat, make sure that integers (called fume-tex-\(chapter\|\(sub\)*section\)) are wrapped by (int-to-string). I'm guessing that you can't mix integers and strings/chars in the concat function anymore, but you could in betas 39 and earlier. Does this theory sound correct? best, -tony -- Anthony Rossini UW Biostatistics, Center for AIDS Research Manifold Graphics, Inc. Epimetrics Corp.