LyX ⇒ can't produce pdf os letter document class

[frohfroh]

Hi,
I had a lyx document of class "letter (lettre)" that worked fine and that I did not touch for some time.
When I now try to produce pdf from it I get an error

Code: Select all

Undefined control sequence
 \opening
              {Madame, Monsieur,}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

The lyx version is 2.0.6 and it's running on ubuntu 14.04.
Thanks for any help

[Stefan Kottwitz]

There may be a dependency - make sure that you filled out all necessary fields, including the SendTo address.

Perhaps post your .lyx file here, as attachment to a post, and in addition the pdfLaTeX export file, so readers could help even without having LyX installed.

Stefan