ROM Hack pk3DS: Crash while opening ExeFS editors

[Isol8iv]

I've been getting this error message when I try and edit TMs in Pokemon Ultra Moon, one of the ExeFS editors. I tried opening the other as well, same thing came up. Anyone know why this is happening?

In case you're wondering, I have already re-dumped my ROM, nothing changed. I've asked on the Homebrew discord as well, no answers there. Someone give me a hand here please. Here's the error message:

Exception Details:
System.IndexOutOfRangeException: Index was outside the bounds of the array.
at pk3DS.TMEditor7.getList() in C:\BuildAgent\work\ccf72a59f9911202\pk3DS\Subforms\Gen7\TMEditor7.cs:line 72
at pk3DS.Main.B_TMHM_Click(Object sender, EventArgs e) in C:\BuildAgent\work\ccf72a59f9911202\pk3DS\Main.cs:line 977
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
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.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

pk3DS, Version=1.0.0.385, Culture=neutral, PublicKeyToken=null
C:\Users\Ralph\Desktop\3DS Randomizer Pack\Step 2 - Randomize\pk3DS.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

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

pk3DS.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
C:\Users\Ralph\Desktop\3DS Randomizer Pack\Step 2 - Randomize\pk3DS.Core.dll

--------------------
User Message:
An unhandled exception has occurred.
You can continue running the program (albeit with potential side-effects), but please report this error.