Error - adding Feature "Full Text ..." SQL 2012 SP1

I want to install a Feature "Full Text ..." on an existing SQL-Server Instance.

I get the following error message:

TITLE: SQL Server Setup failure.
------------------------------

SQL Server Setup has encountered the following error:

Registry properties are not valid under this context..

For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft%20SQL%20Server&EvtSrc=setup.rll&EvtID=50000&EvtType=0x610364A7%25400xE9BC3D64

------------------------------
BUTTONS:

OK
------------------------------

The Link doesn't work. Can you help me?

Kind regards
Annegret