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FLAi & .NetFramework

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Just reinstalled the OS Win10 Pro Oct2020 update. When trying to install FLAi and pressing Update I get a .Net Framework error, my current version is 4.8.  Have been running Win10 Pro for a couple of years and never had this error when installing FLAi. Wondering if anyone has had this issue and knows the solution. 



Error Message

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 ArgadBay.ArgadBay.queueZIPDownload()
   at ArgadBay.ArgadBay.beginUpdate()
   at ArgadBay.ArgadBay.btn_update_MouseClick(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.ButtonBase.OnKeyUp(KeyEventArgs kevent)
   at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
   at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
   at System.Windows.Forms.Control.WmKeyChar(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.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 **************
    Assembly Version:
    Win32 Version: 4.8.4250.0 built by: NET48REL1LAST_C
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
    Assembly Version:
    Win32 Version: 4.8.4200.0 built by: NET48REL1LAST_C
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
FLAi Operations Center
    Assembly Version:
    Win32 Version:
    CodeBase: file:///C:/Users/ideoplastic/AppData/Local/Apps/2.0/5RYCL8EJ.344/B5WOYRR0.8DQ/flai..tion_5ee6bb75ad7be262_0001.0000_5f296d04cccccadd/FLAi%20Operations%20Center.exe
    Assembly Version:
    Win32 Version: 4.8.4250.0 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
    Assembly Version:
    Win32 Version: 4.8.4084.0 built by: NET48REL1
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
    Assembly Version:
    Win32 Version:
    CodeBase: file:///C:/Users/ideoplastic/AppData/Local/Apps/2.0/5RYCL8EJ.344/B5WOYRR0.8DQ/flai..tion_5ee6bb75ad7be262_0001.0000_5f296d04cccccadd/ICSharpCode.SharpZipLib.DLL
    Assembly Version:
    Win32 Version: 4.8.4190.0 built by: NET48REL1LAST_B
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
    Assembly Version:
    Win32 Version: 4.8.4220.0 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
    Assembly Version:
    Win32 Version: 4.8.4084.0 built by: NET48REL1
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
    Assembly Version:
    Win32 Version: 4.8.4084.0 built by: NET48REL1
    CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.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

For example:

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

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.




Joaquin Blanco



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We've seen this error reported 2-3 times on Facebook with no clear solution. We have never been able to duplicate.

Some things that might help based on what people have told me: 

  • Do not install into your simulator's folder but instead into a directory in Documents or similar.
  • "I think it's a matter of different security settings for .net in the first place (I think my version is "too new") and afterwards I followed the suggestion to install it to a separate folder which made it work.  I googled for the error message and found out what to edit in the registry. It's about .net security prompt set from disabled to enabled."

Otherwise you could try the usual things I suggest whenever there are security-related errors popping up:

  • Have you tried disabling any firewall/antivirus?
  • Have you tried running as administrator?
  • Have you tried disabling your UAC and security settings?

I assume you've already tried a complete uninstall of FLAi and a re-install as well. If not, you could consider that, including removing the files. 

Failing that, the manual installation option, though less effective, should at least get the job done.


Evan Reiter
Boston Virtual ARTCC/ZBW Community Manager


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