diff --git a/Libraries/UniversalEditor.UserInterface/Engine.cs b/Libraries/UniversalEditor.UserInterface/Engine.cs
index d06fec6b..9abe1011 100644
--- a/Libraries/UniversalEditor.UserInterface/Engine.cs
+++ b/Libraries/UniversalEditor.UserInterface/Engine.cs
@@ -319,38 +319,7 @@ namespace UniversalEditor.UserInterface
 				// do not render the CustomOption if it's supposed to be invisible
 				if (!eo.Visible) continue;
 
-				if (eo is CustomOptionChoice)
-				{
-					CustomOptionChoice option = (eo as CustomOptionChoice);
-
-					List<ChoiceSetting.ChoiceSettingValue> choices = new List<ChoiceSetting.ChoiceSettingValue>();
-					foreach (CustomOptionFieldChoice choice in option.Choices)
-					{
-						choices.Add(new ChoiceSetting.ChoiceSettingValue(choice.Title, choice.Title, choice.Value));
-					}
-					sg.Settings.Add(new ChoiceSetting(option.PropertyName, option.Title, null, choices.ToArray()));
-				}
-				else if (eo is CustomOptionNumber)
-				{
-					CustomOptionNumber option = (eo as CustomOptionNumber);
-					sg.Settings.Add(new RangeSetting(option.PropertyName, option.Title, (double)option.DefaultValue, (double)option.MinimumValue, (double)option.MaximumValue));
-				}
-				else if (eo is CustomOptionText)
-				{
-					CustomOptionText option = (eo as CustomOptionText);
-					sg.Settings.Add(new TextSetting(option.PropertyName, option.Title, option.DefaultValue));
-				}
-				else if (eo is CustomOptionBoolean)
-				{
-					CustomOptionBoolean option = (eo as CustomOptionBoolean);
-					sg.Settings.Add(new BooleanSetting(option.PropertyName, option.Title, option.DefaultValue));
-				}
-				else if (eo is CustomOptionFile)
-				{
-					CustomOptionFile option = (eo as CustomOptionFile);
-					// sg.Settings.Add(new FileSetting(option.Title, option.DefaultValue));
-					sg.Settings.Add(new TextSetting(option.PropertyName, option.Title, option.DefaultValue));
-				}
+				AddCustomOptionToSettingsGroup(csp, eo, sg);
 			}
 
 			if (dlg.ShowDialog() == DialogResult.OK)
@@ -367,6 +336,64 @@ namespace UniversalEditor.UserInterface
 			}
 			return false;
 		}
+
+		private void AddCustomOptionToSettingsGroup(CustomSettingsProvider csp, CustomOption eo, SettingsGroup sg, string[] path = null)
+		{
+			if (eo is CustomOptionChoice)
+			{
+				CustomOptionChoice option = (eo as CustomOptionChoice);
+
+				List<ChoiceSetting.ChoiceSettingValue> choices = new List<ChoiceSetting.ChoiceSettingValue>();
+				foreach (CustomOptionFieldChoice choice in option.Choices)
+				{
+					choices.Add(new ChoiceSetting.ChoiceSettingValue(choice.Title, choice.Title, choice.Value));
+				}
+				sg.Settings.Add(new ChoiceSetting(option.PropertyName, option.Title, null, choices.ToArray()));
+			}
+			else if (eo is CustomOptionNumber)
+			{
+				CustomOptionNumber option = (eo as CustomOptionNumber);
+				sg.Settings.Add(new RangeSetting(option.PropertyName, option.Title, option.DefaultValue, option.MinimumValue, option.MaximumValue));
+			}
+			else if (eo is CustomOptionText)
+			{
+				CustomOptionText option = (eo as CustomOptionText);
+				sg.Settings.Add(new TextSetting(option.PropertyName, option.Title, option.DefaultValue));
+			}
+			else if (eo is CustomOptionBoolean)
+			{
+				CustomOptionBoolean option = (eo as CustomOptionBoolean);
+				sg.Settings.Add(new BooleanSetting(option.PropertyName, option.Title, option.DefaultValue));
+			}
+			else if (eo is CustomOptionFile)
+			{
+				CustomOptionFile option = (eo as CustomOptionFile);
+				// sg.Settings.Add(new FileSetting(option.Title, option.DefaultValue));
+				sg.Settings.Add(new TextSetting(option.PropertyName, option.Title, option.DefaultValue));
+			}
+			else if (eo is CustomOptionGroup)
+			{
+				CustomOptionGroup cogrp = (eo as CustomOptionGroup);
+				SettingsGroup sg1 = new SettingsGroup();
+				if (path == null)
+				{
+					path = new string[] { cogrp.Title };
+				}
+				else
+				{
+					string[] path2 = new string[path.Length + 1];
+					Array.Copy(path, 0, path2, 0, path.Length);
+					path2[path2.Length - 1] = cogrp.Title;
+					path = path2;
+				}
+				sg1.Path = path;
+				for (int j = 0; j < cogrp.Options.Count; j++)
+				{
+					AddCustomOptionToSettingsGroup(csp, cogrp.Options[j], sg1, path);
+				}
+				csp.SettingsGroups.Add(sg1);
+			}
+		}
 		#endregion
 
 		private static Engine[] m_AvailableEngines = null;