Url: C:\Users\Morteza\Downloads\ExplorerPCalV.1.1\Bin\ExplorerPCal.exe 
-> ExplorerPCal, Version=1.1.0.0, Culture=neutral, PublicKeyToken=a55a2614eb2aee77
Caller: ExplorerPCal.App -> appDispatcherUnhandledException
Exception classes:
   System.NullReferenceException
   System.Reflection.TargetInvocationException
   System.Reflection.TargetInvocationException

Exception messages:
   Object reference not set to an instance of an object.
   Exception has been thrown by the target of an invocation.

   Exception has been thrown by the target of an invocation.

Stack Traces:
   at ExplorerPCal.Utils.ConfigSetGet.GetConfigData(String key)