BibTeX, biblatex and biber ⇒ Biblatex Undefined control sequence \ifprefchar

[doul]

Please, I am using MastersDoctoralThesis Template
I added more articles within the example.bib file and when compiling, this is the error message I receive.

Code: Select all

  "! Undefined control sequence.
<argument> ...ibnameprefix {d.}\isdot \ifprefchar
{} {} {\ifuseprefix {\bibn...
l.375 \printbibliography[heading=bibintoc]"

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.

Please help!

[Johannes_B]

You have an outdated version of biblatex, just do an update.