That seems to be a LaTeX issue, export to LaTeX and look at the errors there.
el On 2016-07-19 11:50, Michael Berger wrote: > Hi all, this is to share my experience with other users and asking for > help from the developers. ;-) > > I have quite a number of LyX documents made in Mageia5 using LyX 2.1; > TexLive 2013; classicthesis-LyX-v4.1, most of them with the module > 'Linguistics' loaded and using different bibliography styles. > > After upgrading to LyX 2.2.0; TexLive2016; classicthesis-LyX-v4.2 and > loading those older documents I found the following when trying to > export to PDF: > > * Beamer presentations > OK > * All types of Koma-Script documents >> basically OK with some minor > adjustments, inter alia regarding the bibliography style, e.g. oscola > * classicthesis-LyX-v4.2_biblatex_biber and > classicthesis-LyX-v4.2_biblatex_bibtex8 >> do compile all example > files as well as their original 'ClassicThesis.lyx' template without > any problem. > * but trying to compile any of my classicthesis-LyX-v4.1 documents I > get either an endless loop or heaps of errors - there are so many > different errors that I eventually gave up trying to fix them > > I also started copying parts of my old documents into a new one but even > text that I considered not very special produced errors. > > Authoring everything entirely new seems to be the only way as far as I > see now. Well is that it? > > Any explanation, clue, advice etc. is highly appreciated. > > Cheers and thanks, > > Michael >