SWORD AND SHIELD ERROR FIX PLEASE HELP

[NateB479]

Hello, i modded pokemon sword and shield and after applying any modes and saving the file if i try to re-open that same file on pkhex i get told it is now an unsupported save file, even though i just used it to create mods. Then pkhex gives me the following error - 

Exception Details:
System.NullReferenceException: Object reference not set to an instance of an object.
   at PKHeX.WinForms.Main.DragoutEnter(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnMouseEnter(EventArgs e)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Loaded Assemblies:
--------------------
mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll

PKHeX, Version=19.11.15.0, Culture=neutral, PublicKeyToken=null
E:\Modding games\switch modding\PKHeX (191115)\PKHeX.exe

System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll

System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll

System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll

PKHeX.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null

System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll

System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll

System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll

PKHeX.Drawing, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null

--------------------
User Message:
An unhandled exception has occurred.
You can continue running PKHeX, but please report this error.
 

[impzzz]

Apparently this is a known bug. You either revert to the backup or you somehow put in the correct game ID somewhere (I hope there's a guide on how to do this).

[Kaphotics]

Wow it's almost like there is multiple threads with this same error!

Read the responses in them, a hotfix was uploaded over 12 hours ago.