update extensions

Author: DSaurus

launch.py

@@ -82,7 +82,7 @@ def load_custom_modules():
                 and os.path.splitext(module_path)[1] != ".py"
             ):
                 continue
-            if module_path.endswith(".disabled"):
+            if module_path.endswith("_disabled"):
                 continue
             time_before = time.perf_counter()
             success = load_custom_module(module_path)

threestudio/__init__.py

@@ -3,7 +3,12 @@
 
 def register(name):
     def decorator(cls):
-        __modules__[name] = cls
+        if name in __modules__:
+            raise ValueError(
+                f"Module {name} already exists! Names of extensions conflict!"
+            )
+        else:
+            __modules__[name] = cls
         return cls
 
     return decorator