fix

rs_Assets.py

@@ -379,12 +379,14 @@ def _from_config_file(self, asset_config_file: str) -> List["LiveryAsset"]:
             self._top_level_assets.append(asset)
 
         # Check if we have any duplicate basenames for downloadable assets
+        basenames = []
         for asset in self.get_assets_with_gdrive_id():
-            for asset_compare in self.get_assets_with_gdrive_id():
-                if asset.basename == asset_compare.basename:
-                    raise ValueError(
-                        f"Duplicate basenames for downloadable assets found in config file: {asset.basename}"
-                    )
+            basenames.append(asset.basename)
+        if len(basenames) != len(set(basenames)):
+            difference = set([x for x in basenames if basenames.count(x) > 1])
+            raise ValueError(
+                f"Duplicate basenames found in {asset_config_file}: {difference}"
+            )
 
         # Wait for downloads to finish, and the do post-download processing
         compress_and_checksum_futures = []