C# WPF Application runs in VS Debug but not as a EXE

Question

I have a strange Problem. I wrote a C# WPF Application wיich runs perfectly in Visual Studio Debug. But when I start the EXE outside of Visual Studio (I didn't move the .exe it's still in the bin\\Debug Folder) the Main Window is displayed correctly and works, but if I try to open the second Window the App crashes. I start the .exe from a Networkdrive but that has always worked so far, this Problem started today. I have commented out all the major Changes I made but still the same Problem.
He copied the following Information into Temp:

<ParentProcessInformation>
    <ParentProcessId>3476</ParentProcessId>
    <ParentProcessPath>C:\Windows\explorer.exe</ParentProcessPath>
    <ParentProcessCmdLine>C:\Windows\Explorer.EXE</ParentProcessCmdLine>
</ParentProcessInformation>
<ProblemSignatures>
    <EventType>CLR20r3</EventType>
    <Parameter0>zimk.kalender.exe</Parameter0>
    <Parameter1>1.0.0.0</Parameter1>
    <Parameter2>53c4f986</Parameter2>
    <Parameter3>PresentationFramework</Parameter3>
    <Parameter4>3.0.0.0</Parameter4>
    <Parameter5>5167b4d1</Parameter5>
    <Parameter6>6263</Parameter6>
    <Parameter7>e1</Parameter7>
    <Parameter8>System.Windows.Markup.XamlParse</Parameter8>
</ProblemSignatures>

And the this Information I got from a .mdmp File:

Exception Code: 0xE0434F4D
Exception Information: An exception came from CLR

Answer 1

Alright I figured it out. I use Command Line Parameters but forgot to start the exe with Parameters .
Sorry I wasted your Time.