diff --git a/modules/__init__.py b/modules/__init__.py
index 6eca4a3..1e5a2ad 100644
--- a/modules/__init__.py
+++ b/modules/__init__.py
@@ -11,8 +11,8 @@ def imwrite_unicode(path, img, params=None):
     root, ext = os.path.splitext(path)
     if not ext:
         ext = ".png"
-        result, encoded_img = cv2.imencode(ext, img, params if params else [])
-        result, encoded_img = cv2.imencode(f".{ext}", img, params if params is not None else [])
-        encoded_img.tofile(path)
-        return True
-    return False
\ No newline at end of file
+    result, encoded_img = cv2.imencode(ext, img, params if params is not None else [])
+    if not result:
+        return False
+    encoded_img.tofile(path)
+    return True
\ No newline at end of file
diff --git a/modules/core.py b/modules/core.py
index c9457b8..6e50252 100644
--- a/modules/core.py
+++ b/modules/core.py
@@ -171,8 +171,6 @@ def limit_resources() -> None:
     # limit memory usage
     if modules.globals.max_memory:
         memory = modules.globals.max_memory * 1024 ** 3
-        if platform.system().lower() == 'darwin':
-            memory = modules.globals.max_memory * 1024 ** 6
         if platform.system().lower() == 'windows':
             import ctypes
             kernel32 = ctypes.windll.kernel32
diff --git a/modules/face_analyser.py b/modules/face_analyser.py
index ba3f0e5..ce51017 100644
--- a/modules/face_analyser.py
+++ b/modules/face_analyser.py
@@ -257,6 +257,8 @@ def get_unique_faces_from_target_image() -> Any:
         modules.globals.source_target_map = []
         target_frame = cv2.imread(modules.globals.target_path)
         many_faces = get_many_faces(target_frame)
+        if many_faces is None:
+            return None
         i = 0
 
         for face in many_faces:
@@ -291,6 +293,8 @@ def get_unique_faces_from_target_video() -> Any:
         for temp_frame_path in tqdm(temp_frame_paths, desc="Extracting face embeddings from frames"):
             temp_frame = cv2.imread(temp_frame_path)
             many_faces = get_many_faces(temp_frame)
+            if many_faces is None:
+                continue
 
             for face in many_faces:
                 face_embeddings.append(face.normed_embedding)
diff --git a/modules/processors/frame/core.py b/modules/processors/frame/core.py
index a87412d..77f2fe9 100644
--- a/modules/processors/frame/core.py
+++ b/modules/processors/frame/core.py
@@ -37,6 +37,7 @@ def load_frame_processor_module(frame_processor: str) -> Any:
         frame_processor_module = importlib.import_module(f'modules.processors.frame.{frame_processor}')
         for method_name in FRAME_PROCESSORS_INTERFACE:
             if not hasattr(frame_processor_module, method_name):
+                print(f"Frame processor {frame_processor} is missing required method {method_name}")
                 sys.exit()
     except ImportError:
         print(f"Frame processor {frame_processor} not found")