The reference was using the label of the English version, so was
broken.
which define the templates for the insertion of external material to a
\SpecialChar LyX
document; see
which define the templates for the insertion of external material to a
\SpecialChar LyX
document; see
\begin_inset CommandInset ref
LatexCommand ref
\begin_inset CommandInset ref
LatexCommand ref
-reference "chap:Including-External-Material"
+reference "cap:InserciĆ³n-de-material"
+plural "false"
+caps "false"
+noprefix "false"