Error - "An unhandled Windows Forms Exception occured" when installing package

When I try to install a package through the package management menu, this error immediately appears. This is the relevant crash log:

01/02/2023 12:06:15
OpenBVE 1.8.4.4 Crash Log
Program is running on the Windows backend
Current screen resolution is: Windowed 960px x 600px
The exception caught was as follows:
System.InvalidOperationException: This BackgroundWorker is currently busy and cannot run multiple tasks concurrently.
   at System.ComponentModel.BackgroundWorker.RunWorkerAsync(Object argument)
   at System.EventHandler.Invoke(Object sender, EventArgs e)
   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)
   at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
   at System.Environment.get_StackTrace()
   at OpenBve.CrashHandler.UIThreadException(Object sender, ThreadExceptionEventArgs t) in B:\SourceCode\source\OpenBVE\System\Functions\CrashHandler.cs:line 72
   at System.Windows.Forms.Application.ThreadContext.OnThreadException(Exception t)
   at System.Windows.Forms.Control.WndProcException(Exception e)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
   at OpenBve.formMain.ShowMainDialog(LaunchParameters initial) in B:\SourceCode\source\OpenBVE\UserInterface\formMain.cs:line 47
   at OpenBve.Program.Main(String[] args) in B:\SourceCode\source\OpenBVE\System\Program.cs:line 269
Current program memory usage: 74.1mb
System memory free: 3401mb

I have reported this bug on Github as well.