I'm trying to reference a item with \cref from a new list type created with enumitem:

\documentclass[12pt, twoside, openright]{book}
% Language options

% Enable UTF-8 input








    \item [Dictionaries]  (i.e. words  \cref{gender_item}), and (i.e. usage count \cref{gender_data_item}).

      \item Gender data \label{gender_data_item}
      \item Unigrams\label{gender_item}

I get ??a) and ??b) references and the next Warning:

LaTeX Warning: cref reference format for label type `flatlisti' undefined on i nput line 22.
  • Welcome to TeX.SE. Please provide a compilable document ,not fragments only. (Putting all together and using article as document class, I get the correct references. Did you compile twice?) – user31729 Jun 15 '17 at 11:37
  • Thanks for the help I put a full compilable document that fails. I provide the full packages in the same order. In case it is a package conflict. I use overleaf an I'm getting the correct bibliography. So i think is compiling two times. – Nasgar Jun 15 '17 at 11:57
  • Please put the \newlist and \setlist definitions as well as the \crefformat statements before \begin{document}. Also clean up the preamble. You're loading some packages twice and in the wrong order, but the main issue the wrong position of \newlist etc. – user31729 Jun 15 '17 at 12:04
  • 1
    Please, avoid those slanted parentheses: label=\textit{\alph*}\textup{)} will yield a much better result. – egreg Jun 15 '17 at 12:18

The \crefname must be given always before \begin{document}, a specification later on will not work, since cleveref freezes its internal 'tables' of known counter names.

Following 'minimal' document has the same issue as from the OP: \crefname{foolist}{foo}{foos} is called too late here, unless shifted to \begin{document}








%%% Too late, see just before \begin{document}

\item A foo\label{foolabel}

However, see \cref{foolabel}

  • Put the ' \crefformat' statements after \begin{document} was the error. Thanks a lot! The other issues comes from quick copy pasting. – Nasgar Jun 15 '17 at 12:16

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