Problem right after startup

Hello!

First of all: Congratulations to this awesome product - I'm just using it for a few hours but I'm really excited about it's features!

Right after creating some sessions and restarting the application I got the following error message:

ArgumentOutOfRangeException - InvalidArgument=Value mit dem Wert 2 ist für index ungültig.
Parametername: index

bei System.Windows.Forms.ListView.ColumnHeaderCollection.get_Item(Int32 index)
bei Devolutions.RemoteDesktopManager.Frames.ConnectionViews.FreConnectionListView.InitListViewColumns()
bei Devolutions.RemoteDesktopManager.Frames.ConnectionViews.FreConnectionListView.LoadConnectionList(Connection[] connections)
bei Devolutions.RemoteDesktopManager.Forms.FrmMainBase.LoadAllConnectionView(Boolean saveState)
bei Devolutions.RemoteDesktopManager.Forms.FrmMainBase.RefreshAllConnectionView(Boolean saveState, Boolean checkOnline)
bei Devolutions.RemoteDesktopManager.Forms.FrmMainDockable.tmFirstLoad_Tick(Object sender, EventArgs e)
bei System.Windows.Forms.Timer.OnTick(EventArgs e)
bei System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
bei System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

After the startup I can't change to the "All Sessions" tab. Trying so also gives the error message above.

Please advice.

Thanks in advance!

Best regards,
Daniel