[tex-live] biblatex/biber problem in TL2015-pretest

[Uwe Siart]

Today biber 2.1 came in. But still, I have a test case with diacritics
that doesn't work:

% -----------------------------------------
\begin{filecontents}{bibertest.bib}
@InProceedings{bibkey1,
author       = {\DH{}and\dj{}and\'{c}, H.},
title        = {Title},
booktitle    = {Booktitle},
location     = {Location},
date         = {2015-05-09},
langid       = {english},
}
\end{filecontents}
\documentclass{article}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage{biblatex}
\addbibresource{bibertest.bib}
\begin{document}
\nocite{*}
\printbibliography
\end{document}
% -----------------------------------------

gives me

% -----------------------------------------
(./t.aux) (./t.bbl
! Extra }, or forgotten \endgroup.
l.24 ...binitperiod}{H.}{H\bibinitperiod}{}{}{}{}}
                                                  %
! Extra }, or forgotten \endgroup.
l.25       }
% -----------------------------------------

and an erroneous "H.H." just before "References".

-- 
Uwe