I am trying to define captions in longtable enviroment. According to Adding a caption to a graphic inside a longtable I should define:


and then use

 \figcaption{my caption}

However defining \figcaption produce the following error in texstudio: "Illegal parameter number in definition of \figcaption." I think there is a conflict with some package... maybe hyperref ? What can I do?


Thanks to David Carlisle there was a missing '}' However, corrected the definition, and adding




gives a new errors: You can't use `\hrule' here except with leaders. \figcaption{lol} Missing number, treated as zero. \figcaption{lol} Illegal unit of measure (pt inserted). \figcaption{lol} Missing \endgroup inserted. \figcaption{lol} ....

What happened??

  • 1
    Please provide a full MWE that generates the problem behavior you're looking to fix. Please be sure to state which TeX distribution you use, which packages you load, and a minimal longtable environment that contains a \figcaption statement.
    – Mico
    Apr 8, 2015 at 2:35
  • Your sample definition is missing a closing } it has four { and only three } Apr 8, 2015 at 7:36
  • 1
    hmm Just saw where you copied that from:-) I fixed it there. Apr 8, 2015 at 7:38

1 Answer 1


I solved the problem: the trick is use \parbox{..} e.g.:

\node[anchor=south west,inner sep=0] (image) at (0,0) { \includegraphics[scale=0.8]{image} };
\figcaption{label: lol.}}

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