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For my thesis, I use biblatex for the bibliography.

As seen here, biblatex is not compatible, with \usepackage[utf8x]{inputenc}. It was reported as close but I still have the same problem with my version of bibtex (last one on archlinux 2011.24688-1). I want to use the € symbol inside my report but it fails without utf8.

! Package biblatex Error: Incompatible package 'ucs'.

See the biblatex package documentation for explanation.
Type  H <return>  for immediate help.

l.7 \begin{document}

Any idea idea how to fix ?




X said Y \cite{bib1}



and the file mybib

@online { bib1,
       title = {Refrence title},
       author = {X},
       url = {http://site.com/y}}
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A minimal working example (MWE) would be handy here: my answer is something of a guess without it! – Joseph Wright Mar 27 '12 at 9:59
up vote 21 down vote accepted

Don't use utf8x. Load the TS1-encoding e.g. through textcomp and if you don't like the euro you get with textcomp change the definition of \texteuro. E.g.:


€  \let\texteuro\euro €
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It works, thank you! – Martin Trigaux Mar 27 '12 at 12:29

The utf8x option for inputenc is (probably) the issue here. Try just


and you should be fine (as detailed in the biblatex manual).

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