Jürgen, here the console output > > Please run LyX from a console and monitor the biber output there.
wolfg...@wolfgang:~$ lyx165 & [1] 3474 wolfg...@wolfgang:~$ INFO - Reading testfile-biber.aux INFO - Reading testfile-biber.bcf INFO - Found 2 citekeys in aux file INFO - Processing bibtex file /home/wolfgang/Desktop/Test/test.bib Can't locate Parse/RecDescent.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl .) at /usr/local/share/perl/5.10.0/Biber/BibTeX/PRD.pm line 11. BEGIN failed--compilation aborted at /usr/local/share/perl/5.10.0/Biber/BibTeX/PRD.pm line 11. Compilation failed in require at /usr/local/share/perl/5.10.0/Biber.pm line 655. INFO - Reading testfile-biber.aux INFO - Reading testfile-biber.bcf INFO - Found 2 citekeys in aux file INFO - Processing bibtex file /home/wolfgang/Desktop/Test/test.bib Can't locate Parse/RecDescent.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl .) at /usr/local/share/perl/5.10.0/Biber/BibTeX/PRD.pm line 11. BEGIN failed--compilation aborted at /usr/local/share/perl/5.10.0/Biber/BibTeX/PRD.pm line 11. Compilation failed in require at /usr/local/share/perl/5.10.0/Biber.pm line 655. I would guess there is something wrong with the perl install, perhaps related or identical to that: In that situation I'd try & build devel/p5-Parse-RecDescent (or re-install it) and then have another go at building the module you're trying to build. But I am a person who manages to muddle everything. So I am asking again for advice Wolfgang
