diff --git a/aider/main.py b/aider/main.py
index 5347ed27b..a01ba0319 100644
--- a/aider/main.py
+++ b/aider/main.py
@@ -374,7 +374,7 @@ def main(argv=None, input=None, output=None, force_git_root=None, return_coder=F
             print("For more information, refer to the aider documentation on configuration.")
             return 1
         else:
-            raise
+            raise e
 
     if args.verbose:
         print("Config files search order, if no --config:")
@@ -386,24 +386,7 @@ def main(argv=None, input=None, output=None, force_git_root=None, return_coder=F
 
     parser = get_parser(default_config_files, git_root)
 
-    try:
-        args, unknown = parser.parse_known_args(argv)
-    except AttributeError as e:
-        if "'bool' object has no attribute 'strip'" in str(e):
-            io.tool_error("Configuration error detected.")
-            io.tool_output("It seems you have 'yes:' in one of your configuration files.")
-            io.tool_output(
-                "Please replace 'yes:' with 'yes-always:' in the relevant .aider.conf.yml file."
-            )
-            io.tool_output("Configuration files are searched for in this order:")
-            for config_file in default_config_files:
-                io.tool_output(f"  - {config_file}")
-            io.tool_output(
-                "For more information, refer to the aider documentation on configuration."
-            )
-            return 1
-        else:
-            raise
+    args, unknown = parser.parse_known_args(argv)
 
     # Load the .env file specified in the arguments
     loaded_dotenvs = load_dotenv_files(git_root, args.env_file, args.encoding)