Error "Control does not support transparent background colors" after changing background color for Editor (4309814)

 Exception: System.ArgumentException Message :

"Control does not support transparent background colors"

Stack Trace:

at System.Windows.Forms.Control.set_BackColor(Color value) at ActiproSoftware.WinUICore.UIControl.set_BackColor(Color value) at

ActiproSoftware.SyntaxEditor.SyntaxEditor.set_BackColor(Color value) at Quest.Toad.Editor.EditorControl.UpdateBackColor(SyntaxEditor syntaxEditor, IConnection connection) at Quest.Toad.Editor.EditorControl.ApplyEditorSettings(IConnection connection) at Quest.Toad.Editor.EditorControl.updateSettings() at Quest.Toad.Editor.EditorControl.SettingsChanged(Object sender, EventArgs args) at Quest.Toad.Notification.SettingsChangedHandler.Invoke(Object sender, EventArgs args) at Quest.Toad.Notification.NotificationManager.SettingChanged(Object sender) at Quest.Toad.Settings.SettingForm.SaveSettings() at Quest.Toad.Settings.SettingForm.btnApply_Click(Object sender, EventArgs e) at System.Windows.Forms.Control.OnClick(EventArgs e) at DevExpress.XtraEditors.BaseButton.OnClick(EventArgs e) at DevExpress.XtraEditors.BaseButton.OnMouseUp(MouseEventArgs e) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at DevExpress.Utils.Controls.ControlBase.WndProc(Message& m) at DevExpress.XtraEditors.BaseControl.WndProc(Message& msg) 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)