TargetInvocationException at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) at System.Delegate.DynamicInvokeImpl(Object[] args) at Microsoft.Win32.SystemEvents.SystemEventInvokeInfo.InvokeCallback(Object arg) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler) NullReferenceException Object reference not set to an instance of an object. at Quicker.Domain.Services.SystemEventsWatcher.FLt6TQYt1KBDOH0GDtFL(Object ) at Quicker.Domain.Services.SystemEventsWatcher.xIijrywBm8V(Object , EventArgs )