When I use \date{} with the recent updates, see example below:

\title{Mathematics of Finance 2}
\author{Daniel Royer\\
  Geneva Business School\\February 2018}
\date{February 2018}

I get:

 Paragraph ended before \FB@date was complete.
<to be read again> 

It worked perfectly before the update. Any ideas?

  • I forgot to mention it's about Miktex! Feb 4, 2018 at 13:35
  • Which TeX engine -- pdfTeX, XeTeX, or LuaTeX -- do you employ?
    – Mico
    Feb 4, 2018 at 13:38
  • 2
    Please do not post such fragments of code only. We need a full document
    – user31729
    Feb 4, 2018 at 13:44
  • 4
    Which documentclass?
    – Johannes_B
    Feb 4, 2018 at 13:44
  • 1
    I think this is caused by \usepackage[french]{babel}: I'll raise with the maintainer
    – Joseph Wright
    Feb 4, 2018 at 13:57

1 Answer 1


babel-french v3.4a introduces a new command \frenchdate requiring three numerical arguments (year,month, day) to format dates in French.

I thought cute to have \date redefined as \frenchdate in French but obviously it was a bad idea :-(

I'll correct this and release a 3.4b version asap.

Meanwhile a quick fix for your problem is to move command \date{February 2018} into the preamble.

  • Thanks. I don't understand how it got moved. Feb 4, 2018 at 18:57

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