Dear Lyx-Wizards, I researched on above error and the closest I got was the discussion between Wolfgang and Jürgen in 2010. However, my text compiled fine with Lyx 2.1.5, now with the 2.2.3 update I get above error. I’m using German characters, don’t know where to find the encoding, though, I thought it was Latin1 or UTF8.
I’m completely lost as where to start looking at, I cannot remove all my „Umlaute“ or the like. I’m using bibdesk for literature. Here is my preamble: \usepackage[backend=biber,style=philosophy-modern,natbib=true]{biblatex} \usepackage{amsmath} \usepackage{amssymb} % für mathbb \usepackage{marginnote} % Randnotizen \usepackage{ragged2e} \usepackage{blindtext} % Lorem ipsum \usepackage{lipsum} \addbibresource{/Users/mhem23/Documents/Uni/Dissertation/Bibliothek/bibdesk/DissBib3.bib} \setlength{\marginparwidth}{2,5cm} % setze Randnotizbreite \renewcommand*{\marginfont}{\footnotesize \bfseries} \let\marginpar\marginnote % \marginpar ist jetzt identisch mit \marginnote \usepackage{xcolor} \usepackage[framemethod=tikz]{mdframed} % für Absatzboxen aller Art \usepackage{longtable, array} Please help me along, it worked with my old Lyx! Thank you very much mark