Wrong generated bufferwrapper.cs

Hi and thanks in advance for reading my problem:

I've created a dtsx-file, put there in a data flow task and in the data flow task a script component. The bufferwrapper.cs of any scriptcomponent gets generated wrong. 

Here is a sample of a property that is generated wrong:

public bool LineHeader_IsNull
    {
        set
        {
            if (value)
            {
                SetNull(0);
            }
            else
            {
                throw new InvalidOperationException("Die IsNull-Eigenschaft kann nicht auf "False" festgelegt werden. Ordnen Sie stattdessen der Spalte einen Wert zu.");
            }
        }
    }

As you can see the string gets generated wrong. "False" shouldnt get written in quotation marks. But they are, and it seems to me that it's a bug. I've installed the most up to date version of SSDT but that didnt has any effect.

My question is: How can I get rid of this error or how to change the language of generated strings (Because I think that maybe this erorr concerns only the german version)? I wouldnt mind to change the language from german to english if I would only know how. Of course I can correct it my self, but as soon as save the script exit visual studio and click again on "edit script" the errors appear again. That means that the correction fo all output columns have to be made eversytime when I change anything in the script. :(

Please help.