Good afternoon. An error occurred when creating the map:

Something went horribly wrong and an unbandled exception has been caught.

but the project still opened and worked. However, when I opened it today, I was unable to load the map or do anything else. What should I do to make the project work again?

Source: System.Drawing

Reason: invalid parameter.

Stack trace:    в System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)

  in System.Drawing.Bitmap..ctor(Int32 width, Int32 height)

   in EasyFPSEditor15.MapPictureLayer..ctor(Int32 cellSize)

   in EasyFPSEditor15.MapWindow.Clear()

  in EasyFPSEditor15.Map.Clear()

   in EasyFPSEditor15.Map.Load(String path)

  in EasyFPSEditor15.Editor.LoadMap(Int32 index)

   in EasyFPSEditor15.MainForm.ListBoxMapsSelectedIndexChanged(Object sender, EventArgs e)

   in System.Windows.Forms.ListBox.OnSelectedIndexChanged(EventArgs e)

  in System.Windows.Forms.ListBox.set_SelectedIndex(Int32 value)

   in EasyFPSEditor15.Editor.OpenProject(String name)

   in EasyFPSEditor15.ProjectsList.Button1Click(Object sender, EventArgs e)

   in System.Windows.Forms.Control.OnClick(EventArgs e)

   in System.Windows.Forms.Button.OnClick(EventArgs e)

   in System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)

  in System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)

  in System.Windows.Forms.Control.WndProc(Message& m)

   in System.Windows.Forms.ButtonBase.WndProc(Message& m)

   in System.Windows.Forms.Button.WndProc(Message& m)

  in System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

   in System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

  in System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)