diff --git a/src/assets/AssetsLoader.cpp b/src/assets/AssetsLoader.cpp
index 0fde22fc4..49ce5e04d 100644
--- a/src/assets/AssetsLoader.cpp
+++ b/src/assets/AssetsLoader.cpp
@@ -5,6 +5,7 @@
 #include <utility>
 
 #include "coders/imageio.hpp"
+#include "coders/commons.hpp"
 #include "constants.hpp"
 #include "content/Content.hpp"
 #include "content/ContentPack.hpp"
@@ -71,20 +72,26 @@ aloader_func AssetsLoader::getLoader(AssetType tag) {
 void AssetsLoader::loadNext() {
     const aloader_entry& entry = entries.front();
     logger.info() << "loading " << entry.filename << " as " << entry.alias;
+
+    std::string error {};
     try {
         aloader_func loader = getLoader(entry.tag);
         auto postfunc =
             loader(this, paths, entry.filename, entry.alias, entry.config);
         postfunc(&assets);
-        entries.pop();
-    } catch (std::runtime_error& err) {
-        logger.error() << err.what();
-        auto type = entry.tag;
-        std::string filename = entry.filename;
-        std::string reason = err.what();
-        entries.pop();
-        throw assetload::error(type, std::move(filename), std::move(reason));
+    } catch (const parsing_error& err) {
+        error = err.errorLog();
+    } catch (const std::runtime_error& err) {
+        error = err.what();
     }
+    if (!error.empty()) {
+        logger.error() << error;
+        auto tag = entry.tag;
+        auto filename = entry.filename;
+        entries.pop();
+        throw assetload::error(tag, std::move(filename), std::move(error));
+    }
+    entries.pop();
 }
 
 static void add_layouts(
diff --git a/src/coders/obj.cpp b/src/coders/obj.cpp
index 0eed9bf68..d7ff244aa 100644
--- a/src/coders/obj.cpp
+++ b/src/coders/obj.cpp
@@ -10,20 +10,21 @@ class ObjParser : BasicParser<char> {
     std::vector<glm::vec2> uvs {{0, 0}};
     std::vector<glm::vec3> normals {{0, 1, 0}};
 
+    // TODO: refactor
     void parseFace(Mesh& mesh) {
         std::vector<Vertex> vertices;
         while (hasNext()) {
             auto c = peekInLine();
             if (c == '\n') {
                 break;
-            } else {
+            } else if (hasNext()) {
                 uint indices[3] {};
                 uint i = 0;
                 do {
                     char next = peekInLine();
                     if (is_digit(next)) {
                         indices[i] = parseSimpleInt(10);
-                        if (peekInLine() == '/') {
+                        if (hasNext() && peekInLine() == '/') {
                             pos++;
                         }
                     } else if (next == '/') {
@@ -31,13 +32,13 @@ class ObjParser : BasicParser<char> {
                     } else {
                         break;
                     }
-                } while (peekInLine() != '\n' && ++i < 3);
+                } while (hasNext() && peekInLine() != '\n' && ++i < 3);
 
                 vertices.push_back(Vertex {
                     coords[indices[0]], uvs[indices[1]], normals[indices[2]]});
             }
         }
-        if (peekInLine() != '\n' && hasNext()) {
+        if (hasNext() && peekInLine() != '\n') {
             skipLine();
         }
         if (vertices.size() >= 3) {
diff --git a/src/content/ContentLoader.cpp b/src/content/ContentLoader.cpp
index a88146bed..c9b982810 100644
--- a/src/content/ContentLoader.cpp
+++ b/src/content/ContentLoader.cpp
@@ -492,6 +492,7 @@ void ContentLoader::loadScripts(Content& content) {
     load_scripts(content, content.items);
 
     for (const auto& [packid, runtime] : content.getPacks()) {
+        auto env = runtime->getEnvironment();
         const auto& pack = runtime->getInfo();
         const auto& folder = pack.folder;
         
@@ -500,9 +501,10 @@ void ContentLoader::loadScripts(Content& content) {
 
         // Load entity components
         io::path componentsDir = folder / "scripts/components";
-        foreach_file(componentsDir, [&pack](const io::path& file) {
+        foreach_file(componentsDir, [&pack, env](const io::path& file) {
             auto name = pack.id + ":" + file.stem();
             scripting::load_entity_component(
+                env,
                 name,
                 file,
                 pack.id + ":scripts/components/" + file.name()
diff --git a/src/frontend/UiDocument.cpp b/src/frontend/UiDocument.cpp
index da4fec517..c1269b879 100644
--- a/src/frontend/UiDocument.cpp
+++ b/src/frontend/UiDocument.cpp
@@ -45,7 +45,7 @@ std::shared_ptr<gui::UINode> UiDocument::get(const std::string& id) const {
     if (found == map.end()) {
         return nullptr;
     }
-    return found->second;
+    return found->second.lock();
 }
 
 const uidocscript& UiDocument::getScript() const {
diff --git a/src/frontend/UiDocument.hpp b/src/frontend/UiDocument.hpp
index 2ad00da80..8ebf7c3e6 100644
--- a/src/frontend/UiDocument.hpp
+++ b/src/frontend/UiDocument.hpp
@@ -19,7 +19,7 @@ struct uidocscript {
     bool onclose : 1;
 };
 
-using UINodesMap = std::unordered_map<std::string, std::shared_ptr<gui::UINode>>;
+using UINodesMap = std::unordered_map<std::string, std::weak_ptr<gui::UINode>>;
 
 class UiDocument {
     std::string id;
diff --git a/src/graphics/ui/elements/UINode.cpp b/src/graphics/ui/elements/UINode.cpp
index f61e61a90..e62ff1df2 100644
--- a/src/graphics/ui/elements/UINode.cpp
+++ b/src/graphics/ui/elements/UINode.cpp
@@ -385,11 +385,14 @@ bool UINode::isSubnodeOf(const UINode* node) {
 
 void UINode::getIndices(
     const std::shared_ptr<UINode>& node,
-    std::unordered_map<std::string, std::shared_ptr<UINode>>& map
+    std::unordered_map<std::string, std::weak_ptr<UINode>>& map
 ) {
     const std::string& id = node->getId();
     if (!id.empty()) {
-        map[id] = node;
+        const auto& found = map.find(id);
+        if (found == map.end() || found->second.expired()) {
+            map[id] = node;
+        }
     }
     auto container = std::dynamic_pointer_cast<gui::Container>(node);
     if (container) {
diff --git a/src/graphics/ui/elements/UINode.hpp b/src/graphics/ui/elements/UINode.hpp
index 011c23673..cbd43b380 100644
--- a/src/graphics/ui/elements/UINode.hpp
+++ b/src/graphics/ui/elements/UINode.hpp
@@ -289,7 +289,7 @@ namespace gui {
         /// @brief collect all nodes having id
         static void getIndices(
             const std::shared_ptr<UINode>& node,
-            std::unordered_map<std::string, std::shared_ptr<UINode>>& map
+            std::unordered_map<std::string, std::weak_ptr<UINode>>& map
         );
 
         static std::shared_ptr<UINode> find(
diff --git a/src/logic/scripting/lua/libs/libentity.cpp b/src/logic/scripting/lua/libs/libentity.cpp
index 3b9730c21..5cab675a0 100644
--- a/src/logic/scripting/lua/libs/libentity.cpp
+++ b/src/logic/scripting/lua/libs/libentity.cpp
@@ -1,6 +1,7 @@
 #include "libentity.hpp"
 
 #include "content/Content.hpp"
+#include "content/ContentPack.hpp"
 #include "engine/Engine.hpp"
 #include "engine/EnginePaths.hpp"
 #include "objects/Entities.hpp"
@@ -236,7 +237,14 @@ static int l_reload_component(lua::State* L) {
     }
     auto filename = name.substr(0, pos + 1) + "scripts/components/" +
                     name.substr(pos + 1) + ".lua";
-    scripting::load_entity_component(name, filename, filename);
+    auto prefix = name.substr(0, pos);
+    auto runtime = content->getPackRuntime(prefix);
+    if (runtime == nullptr) {
+        throw std::runtime_error("pack '" + prefix + "' content is not loaded");
+    }
+    scripting::load_entity_component(
+        runtime->getEnvironment(), name, filename, filename
+    );
     return 0;
 }
 
diff --git a/src/logic/scripting/scripting.cpp b/src/logic/scripting/scripting.cpp
index 3a68917dc..15c4e85e7 100644
--- a/src/logic/scripting/scripting.cpp
+++ b/src/logic/scripting/scripting.cpp
@@ -708,12 +708,15 @@ void scripting::load_content_script(
 }
 
 void scripting::load_entity_component(
-    const std::string& name, const io::path& file, const std::string& fileName
+    const scriptenv& env,
+    const std::string& name,
+    const io::path& file,
+    const std::string& fileName
 ) {
     auto L = lua::get_main_state();
     std::string src = io::read_string(file);
     logger.info() << "script (component) " << file.string();
-    lua::loadbuffer(L, 0, src, fileName);
+    lua::loadbuffer(L, *env, src, fileName);
     lua::store_in(L, lua::CHUNKS_TABLE, name);
 }
 
diff --git a/src/logic/scripting/scripting.hpp b/src/logic/scripting/scripting.hpp
index 966450c61..298130c99 100644
--- a/src/logic/scripting/scripting.hpp
+++ b/src/logic/scripting/scripting.hpp
@@ -186,10 +186,12 @@ namespace scripting {
     );
 
     /// @brief Load component script
+    /// @param env environment
     /// @param name component full name (packid:name)
     /// @param file component script file path
     /// @param fileName script file path using the engine format
     void load_entity_component(
+        const scriptenv& env,
         const std::string& name,
         const io::path& file,
         const std::string& fileName
diff --git a/src/util/ObjectsPool.hpp b/src/util/ObjectsPool.hpp
index 55238959e..075024f8e 100644
--- a/src/util/ObjectsPool.hpp
+++ b/src/util/ObjectsPool.hpp
@@ -33,7 +33,9 @@ namespace util {
         std::shared_ptr<T> create(Args&&... args) {
             std::lock_guard lock(mutex);
             if (freeObjects.empty()) {
-                allocateNew();
+                if (!allocateNew()) {
+                    return std::make_shared<T>(std::forward<Args>(args)...);
+                }
             }
             auto ptr = freeObjects.front();
             freeObjects.pop();
@@ -49,7 +51,7 @@ namespace util {
         std::queue<void*> freeObjects;
         std::mutex mutex;
 
-        void allocateNew() {
+        bool allocateNew() {
             std::unique_ptr<void, AlignedDeleter> ptr(
 #if defined(_WIN32)
                 _aligned_malloc(sizeof(T), alignof(T))
@@ -57,8 +59,12 @@ namespace util {
                 std::aligned_alloc(alignof(T), sizeof(T))
 #endif
             );
+            if (ptr == nullptr) {
+                return false;
+            }
             freeObjects.push(ptr.get());
             objects.push_back(std::move(ptr));
+            return true;
         }
     };
 }