diff --git a/project/code/LGS/ResourcePathManager.cs b/project/code/LGS/ResourcePathManager.cs
index ec31c1c..50f0cdb 100644
--- a/project/code/LGS/ResourcePathManager.cs
+++ b/project/code/LGS/ResourcePathManager.cs
@@ -5,7 +5,7 @@ using System.Linq;
 
 namespace KeepersCompound.LGS;
 
-// TODO: Support FMs resource paths!
+// TODO: Merge the two versions of GetXXX and handle null campaign string as OM
 public class ResourcePathManager
 {
     private record CampaignResources
@@ -84,6 +84,13 @@ public class ResourcePathManager
         return false;
     }
 
+    public string[] GetCampaignNames()
+    {
+        if (!_initialised) return null;
+
+        return _fmResources.Keys.ToArray();
+    }
+
     public string GetMissionPath(string missionName)
     {
         if (!_initialised) return null;
@@ -107,6 +114,24 @@ public class ResourcePathManager
         return null;
     }
 
+    public string[] GetMissionNames()
+    {
+        if (!_initialised) return null;
+
+        return _omResources.missionPathMap.Keys.ToArray();
+    }
+
+    public string[] GetMissionNames(string campaignName)
+    {
+        if (!_initialised) return null;
+
+        if (_fmResources.TryGetValue(campaignName, out var campaign))
+        {
+            return campaign.missionPathMap.Keys.ToArray();
+        }
+        return null;
+    }
+
     public string GetTexturePath(string textureName)
     {
         if (!_initialised) return null;
diff --git a/project/code/TMV/Mission.cs b/project/code/TMV/Mission.cs
index cd3c9c9..918fbf6 100644
--- a/project/code/TMV/Mission.cs
+++ b/project/code/TMV/Mission.cs
@@ -48,11 +48,18 @@ public partial class Mission : Node3D
 		var extractPath = ProjectSettings.GlobalizePath($"user://extracted/tmp");
 		_installPaths = new ResourcePathManager(extractPath);
 		var missionSelector = GetNode<Control>("%MissionSelector") as MissionSelector;
-		missionSelector.LoadMission += (string rootPath, string missionPath) =>
+		missionSelector.pathManager = _installPaths;
+		missionSelector.LoadMission += (string campaign, string mission) =>
 		{
-			var inited = _installPaths.Init(rootPath);
-			GD.Print($"Inited paths: {inited}");
-			FileName = missionPath;
+			if (campaign == null)
+			{
+				FileName = _installPaths.GetMissionPath(mission);
+			}
+			else
+			{
+				FileName = _installPaths.GetMissionPath(campaign, mission);
+			}
+
 			Build = true;
 		};
 	}
diff --git a/project/code/TMV/UI/MissionSelector.cs b/project/code/TMV/UI/MissionSelector.cs
index 338363c..712f945 100644
--- a/project/code/TMV/UI/MissionSelector.cs
+++ b/project/code/TMV/UI/MissionSelector.cs
@@ -1,15 +1,14 @@
-using System.IO;
-using System.Linq;
 using Godot;
+using KeepersCompound.LGS;
 
 namespace KeepersCompound.TMV.UI;
 
 public partial class MissionSelector : Control
 {
 	[Signal]
-	public delegate void LoadMissionEventHandler(string rootPath, string missionPath);
+	public delegate void LoadMissionEventHandler(string campaign, string mission);
 
-	private InstallPaths _installPaths;
+	public ResourcePathManager pathManager;
 
 	private FileDialog _FolderSelect;
 	private LineEdit _FolderPath;
@@ -22,7 +21,6 @@ public partial class MissionSelector : Control
 	public override void _Ready()
 	{
 		// TODO: Load initial folderpath from config and prefil everything
-
 		_FolderSelect = GetNode<FileDialog>("%FolderSelect");
 		_FolderPath = GetNode<LineEdit>("%FolderPath");
 		_BrowseButton = GetNode<Button>("%BrowseButton");
@@ -32,8 +30,8 @@ public partial class MissionSelector : Control
 		_CancelButton = GetNode<Button>("%CancelButton");
 
 		_BrowseButton.Pressed += () => _FolderSelect.Visible = true;
-		_FolderSelect.DirSelected += (string dir) => { _FolderPath.Text = dir; BuildCampaignList(dir); };
-		_FolderPath.TextSubmitted += BuildCampaignList;
+		_FolderSelect.DirSelected += SetInstallPath;
+		_FolderPath.TextSubmitted += SetInstallPath;
 		_Missions.ItemSelected += (long _) => _LoadButton.Disabled = false;
 		_Campaigns.ItemSelected += BuildMissionList;
 		_LoadButton.Pressed += EmitLoadMission;
@@ -51,19 +49,25 @@ public partial class MissionSelector : Control
 		}
 	}
 
-	private void BuildCampaignList(string path)
+	private void SetInstallPath(string path)
 	{
-		_installPaths = new InstallPaths(path);
+		_FolderPath.Text = path;
+		if (pathManager.Init(path))
+		{
+			BuildCampaignList();
+		}
+	}
 
+	private void BuildCampaignList()
+	{
 		_Campaigns.Clear();
 		_Missions.Clear();
 		_LoadButton.Disabled = true;
 
 		_Campaigns.AddItem("Original Missions");
-		var paths = Directory.GetDirectories(_installPaths.fmsPath);
-		foreach (var c in paths.OrderBy(s => s))
+		foreach (var campaign in pathManager.GetCampaignNames())
 		{
-			_Campaigns.AddItem(c.TrimPrefix(_installPaths.fmsPath));
+			_Campaigns.AddItem(campaign);
 		}
 	}
 
@@ -72,39 +76,31 @@ public partial class MissionSelector : Control
 		_Missions.Clear();
 		_LoadButton.Disabled = true;
 
-		var campaignPath = "";
-		if (idx == 0)
-		{
-			campaignPath = _installPaths.omsPath;
-		}
-		else
-		{
-			campaignPath = _installPaths.fmsPath + _Campaigns.GetItemText((int)idx);
-		}
+		var campaignName = _Campaigns.GetItemText((int)idx);
+		var missionNames = (idx == 0) ?
+			pathManager.GetMissionNames() :
+			pathManager.GetMissionNames(campaignName);
 
-		string[] extensions = { "mis", "cow" };
-		var paths = Directory.GetFiles(campaignPath);
-		foreach (var f in paths.OrderBy(s => s))
+		foreach (var mission in missionNames)
 		{
-			if (extensions.Contains(f.GetExtension().ToLower()))
-			{
-				_Missions.AddItem(f.TrimPrefix(campaignPath));
-			}
+			_Missions.AddItem(mission);
 		}
 	}
 
 	private void EmitLoadMission()
 	{
-		var selectedCampaign = _Campaigns.GetSelectedItems()[0];
-		var selected = _Missions.GetSelectedItems();
-		if (selected.IsEmpty())
+		var campaignIdxs = _Campaigns.GetSelectedItems();
+		var missionIdxs = _Missions.GetSelectedItems();
+		if (campaignIdxs.IsEmpty() || missionIdxs.IsEmpty())
 		{
 			return;
 		}
 
-		var campaignPath = selectedCampaign == 0 ? _installPaths.omsPath : _installPaths.fmsPath + _Campaigns.GetItemText(selectedCampaign);
-		var path = campaignPath + _Missions.GetItemText(selected[0]);
-		EmitSignal(SignalName.LoadMission, _installPaths.rootPath, path);
+		var campaignIdx = campaignIdxs[0];
+		var missionIdx = missionIdxs[0];
+		var campaignName = campaignIdx == 0 ? null : _Campaigns.GetItemText(campaignIdx);
+		var missionName = _Missions.GetItemText(missionIdx);
+		EmitSignal(SignalName.LoadMission, campaignName, missionName);
 
 		Visible = false;
 	}