diff --git a/modules/globebrowsing/rendering/layermanager.cpp b/modules/globebrowsing/rendering/layermanager.cpp
index 0f4a80d3b7..33a227aad2 100644
--- a/modules/globebrowsing/rendering/layermanager.cpp
+++ b/modules/globebrowsing/rendering/layermanager.cpp
@@ -60,8 +60,8 @@ namespace globebrowsing {
         layerDict.getValue("Name", layerName);
         setName(layerName);
         
-        
-        _tileProvider = std::shared_ptr<TileProvider>(TileProvider::createFromDictionary(layerDict));
+        _tileProvider = std::shared_ptr<TileProvider>(
+            TileProvider::createFromDictionary(layerDict));
         
         // Something else went wrong and no exception was thrown
         if (_tileProvider == nullptr) {
@@ -80,11 +80,13 @@ namespace globebrowsing {
 
     }
 
-    ChunkTilePile Layer::getChunkTilePile(const TileIndex& tileIndex, int pileSize) const{
-        return std::move(TileSelector::getHighestResolutionTilePile(_tileProvider.get(), tileIndex, pileSize));
+    ChunkTilePile Layer::getChunkTilePile(
+        const TileIndex& tileIndex,
+        int pileSize) const {
+        return std::move(TileSelector::getHighestResolutionTilePile(
+            _tileProvider.get(), tileIndex, pileSize));
     }
 
-    
     //////////////////////////////////////////////////////////////////////////////////////
     //                               Layer Group                                        //
     //////////////////////////////////////////////////////////////////////////////////////
@@ -158,19 +160,18 @@ namespace globebrowsing {
 
         setName("Layers");
         
+        if (NUM_LAYER_GROUPS != layerGroupsDict.size()) {
+            throw ghoul::RuntimeError(
+                "Number of Layer Groups must be equal to " + NUM_LAYER_GROUPS);
+        }
         // Create all the categories of tile providers
         for (size_t i = 0; i < layerGroupsDict.size(); i++) {
             std::string groupName = LayerManager::LAYER_GROUP_NAMES[i];
-            ghoul::Dictionary layerGroupDict = layerGroupsDict.value<ghoul::Dictionary>(groupName);
+            ghoul::Dictionary layerGroupDict =
+                layerGroupsDict.value<ghoul::Dictionary>(groupName);
 
-            TileProviderInitData initData;
-            initData.minimumPixelSize = 512;
-            initData.threads = 1;
-            initData.cacheSize = 5000;
-            initData.framesUntilRequestQueueFlush = 60;
-            initData.preprocessTiles = (i == LayerManager::HeightLayers); // Only preprocess height maps.
-            
-            _layerGroups.push_back(std::make_shared<LayerGroup>(groupName, layerGroupDict));
+            _layerGroups.push_back(
+                std::make_shared<LayerGroup>(groupName, layerGroupDict));
         }
         
         for(auto layerGroup : _layerGroups){
@@ -182,17 +183,18 @@ namespace globebrowsing {
         
     }
 
-    LayerGroup& LayerManager::layerGroup(size_t groupId) {
+    const LayerGroup& LayerManager::layerGroup(size_t groupId) {
         return *_layerGroups[groupId];
     }
 
-    LayerGroup& LayerManager::layerGroup(LayerGroupId groupId) {
+    const LayerGroup& LayerManager::layerGroup(LayerGroupId groupId) {
         return *_layerGroups[groupId];
     }
 
     bool LayerManager::hasAnyBlendingLayersEnabled() const {
         for (const auto& layerGroup : _layerGroups){
-            if (layerGroup->layerBlendingEnabled() && layerGroup->activeLayers().size() > 0){
+            if (layerGroup->layerBlendingEnabled() &&
+                layerGroup->activeLayers().size() > 0){
                 return true;
             }
         }
diff --git a/modules/globebrowsing/rendering/layermanager.h b/modules/globebrowsing/rendering/layermanager.h
index aee0510bd6..e7df2fe6ca 100644
--- a/modules/globebrowsing/rendering/layermanager.h
+++ b/modules/globebrowsing/rendering/layermanager.h
@@ -58,7 +58,6 @@ namespace globebrowsing {
     */
     class Layer : public properties::PropertyOwner {
     public:
-
         Layer(const ghoul::Dictionary& layerDict);
         ~Layer();
 
@@ -69,7 +68,6 @@ namespace globebrowsing {
         const LayerRenderSettings& renderSettings() const { return _renderSettings; }
 
     private:
-
         properties::BoolProperty _enabled;
         std::shared_ptr<TileProvider> _tileProvider;
         LayerRenderSettings _renderSettings;
@@ -79,7 +77,6 @@ namespace globebrowsing {
      * Convenience class for dealing with multiple <code>Layer</code>s.
      */
     struct LayerGroup : public properties::PropertyOwner {
-
         LayerGroup(std::string name);
         LayerGroup(std::string name, const ghoul::Dictionary& dict);
 
@@ -98,7 +95,6 @@ namespace globebrowsing {
         bool layerBlendingEnabled() const { return _levelBlendingEnabled.value(); }
 
     private:
-        
         std::vector<std::shared_ptr<Layer>> _layers;
         std::vector<std::shared_ptr<Layer>> _activeLayers;
 
@@ -110,7 +106,6 @@ namespace globebrowsing {
     */
     class LayerManager : public properties::PropertyOwner  {
     public:
-
         static const size_t NUM_LAYER_GROUPS = 7;
         static const std::string LAYER_GROUP_NAMES[NUM_LAYER_GROUPS];
         static enum LayerGroupId{
@@ -126,8 +121,8 @@ namespace globebrowsing {
         LayerManager(const ghoul::Dictionary& textureCategoriesDictionary);
         ~LayerManager();
 
-        LayerGroup& layerGroup(size_t groupId);
-        LayerGroup& layerGroup(LayerGroupId);
+        const LayerGroup& layerGroup(size_t groupId);
+        const LayerGroup& layerGroup(LayerGroupId);
 
         bool hasAnyBlendingLayersEnabled() const;
 
@@ -137,9 +132,7 @@ namespace globebrowsing {
         void reset(bool includingDisabled = false);
 
     private:
-
         std::vector<std::shared_ptr<LayerGroup>> _layerGroups;
-
     };
 
 } // namespace globebrowsing
diff --git a/modules/globebrowsing/tile/tileprovider/tileprovider.h b/modules/globebrowsing/tile/tileprovider/tileprovider.h
index b82c555163..653d879b8f 100644
--- a/modules/globebrowsing/tile/tileprovider/tileprovider.h
+++ b/modules/globebrowsing/tile/tileprovider/tileprovider.h
@@ -147,14 +147,6 @@ namespace globebrowsing {
 
     typedef LRUCache<TileHashKey, Tile> TileCache;
 
-    struct TileProviderInitData {
-        int minimumPixelSize;
-        int threads;
-        int cacheSize;
-        int framesUntilRequestQueueFlush;
-        bool preprocessTiles = false;
-    };
-
 } // namespace globebrowsing
 } // namespace openspace