DUMLdore not opening/crash

[gav902]

The issue I'm having is very similar to the issue from #31 , however I could not figure out how to fix it based off the comments under it. Sorry if the fix is really simple, I'm brand new to this. When I try to start DUMLdore with my spark connected and powered on, no window appears but it shows up in task manager. When I start DUMLdore and power my spark on after it's open, it gives me this error code:

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 DUMLdoreV3.Form1.Disconnect()
at DUMLdoreV3.Form1.USBTryMyDeviceConnection()
at DUMLdoreV3.Form1.USBPort_USBDeviceAttached(Object sender, USBDeviceEventArgs e)
at USBClassLibrary.USBClass.ProcessWindowsMessage(Int32 Msg, IntPtr WParam, IntPtr LParam, Boolean& handled)
at DUMLdoreV3.Form1.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: 4.0.0.0
Win32 Version: 4.8.4121.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll

DUMLdoreV3
Assembly Version: 3.1.7000.29546
Win32 Version: 3.1.0.0
CodeBase: file:///C:/DUMLdore-master/DUMLdoreV3.exe

System.Windows.Forms
Assembly Version: 4.0.0.0
Win32 Version: 4.8.4121.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll

System
Assembly Version: 4.0.0.0
Win32 Version: 4.8.4001.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll

System.Drawing
Assembly Version: 4.0.0.0
Win32 Version: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll

System.ValueTuple
Assembly Version: 4.0.0.0
Win32 Version: 4.8.3752.0
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.ValueTuple/v4.0_4.0.0.0__cc7b13ffcd2ddd51/System.ValueTuple.dll

USBClassLibrary
Assembly Version: 1.0.5.0
Win32 Version: 3.1.0.0
CodeBase: file:///C:/DUMLdore-master/DUMLdoreV3.exe

DUML
Assembly Version: 1.0.0.0
Win32 Version: 3.1.0.0
CodeBase: file:///C:/DUMLdore-master/DUMLdoreV3.exe

System.Configuration
Assembly Version: 4.0.0.0
Win32 Version: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll

System.Core
Assembly Version: 4.0.0.0
Win32 Version: 4.8.4121.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll

System.Xml
Assembly Version: 4.0.0.0
Win32 Version: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__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:

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.