LyX ⇒ complaints about \newreffomat

[CSMR]

When I put in the preamble something like:

Code: Select all

\newrefformat {pro}{Proposition \ref{#1}}

I sometimes get a complaint on compiling: "Undefined control sequence."

It's a strange error because it happens in some documents and not others, despite having all the same settings, and on some documents I can get it to go away by making unrelated edits to the document, and on others I get the complaint even with an empty document.

What should I be doing about this?

Thanks!

[cgnieder]

The only thing I can say is that \newrefformat is provided by the prettyref package… I'm not really familiar with LyX but adding \usepackage{prettyref} to the LaTeX preamble should help.

Regards

[CSMR]

Thanks, that fixed it!