Unhandled exception - object reference not set

Unhandled exception has occurred in a component in your application. If you click Continue, the application will ignore this error and attempt to continue.

Object reference not set to an instance of an object

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See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
   at Jumpcord.MainView.get_NeedToDisplayVncError()
   at Jumpcord.MainView.ShowAppropriateMessageOnForm()
   at Jumpcord.MainView.MainView_Activated(Object sender, EventArgs e)
   at System.Windows.Forms.Form.OnActivated(EventArgs e)
   at System.Windows.Forms.Form.set_Active(Boolean value)
   at System.Windows.Forms.Form.WmActivate(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.8669 (QFE.050727-8600)
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
JumpDesktop
    Assembly Version: 3.3.8.0
    Win32 Version: 3.3.8
    CodeBase: file:///C:/Program%20Files%20(x86)/Jump%20Desktop/JumpDesktop.exe
----------------------------------------
System.Windows.Forms
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.8662 (QFE.050727-8600)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.8662 (QFE.050727-8600)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.8663 (QFE.050727-8600)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
Accessibility
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.8662 (QFE.050727-8600)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Accessibility/2.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
----------------------------------------
System.Runtime.Remoting
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.8662 (QFE.050727-8600)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Runtime.Remoting/2.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll
----------------------------------------
JumpCommon
    Assembly Version: 3.3.8.0
    Win32 Version: 3.3.8
    CodeBase: file:///C:/Program%20Files%20(x86)/Jump%20Desktop/JumpCommon.DLL
----------------------------------------
System.Xml
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.8662 (QFE.050727-8600)
    CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
    <system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.

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I had that previous error where I had to go to a different (older?) version:

https://jumpdesktop.com/ downloads/ JumpDesktopInstaller-3.3.8.exe

In the previous problem, I was unable to connect through email, but I could use my IP address.

Similarly now with the current unhandled exception, email connection doesn’t work, but the IP address does.

(I sent logs on Android before, but I’m not sure logs on the desktop are)

Any ideas?