Unknown error unpacking file: C:/xampp/php/php5ts.dll

[samythekid]

I am trying to install the newest version of Xampp from this file: xampp-win32-1.8.3-5-VC11-installer.exe
Every time I get the same error:
Unknown error unpacking file: C:/xampp/php/php5ts.dll
and then the installer exits the intalling procedure...
Can anyone help me?
Thanx
Sam