diff --git a/.gitignore b/.gitignore
index ca46faeb..16d8680a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -171,4 +171,5 @@ config.backup.yaml
 # runtime
 runtime/
 dev/
-installer_files/
\ No newline at end of file
+installer_files/
+config.yaml
diff --git a/config.yaml b/config.yaml.example
similarity index 100%
rename from config.yaml
rename to config.yaml.example
diff --git a/core/_5_split_sub.py b/core/_5_split_sub.py
index 76669646..c2252b76 100644
--- a/core/_5_split_sub.py
+++ b/core/_5_split_sub.py
@@ -43,6 +43,11 @@ def valid_align(response_data):
     align_data = parsed['align']
     src_parts = src_part.split('\n')
     tr_parts = [item[f'target_part_{i+1}'].strip() for i, item in enumerate(align_data)]
+
+    # bugfix: if the src_parts and tr_parts have different lengths, merge them into one part
+    if len(src_parts) != len(tr_parts):
+        src_parts = ["\n".join(src_parts)]
+        tr_parts = ["\n".join(tr_parts)]
     
     whisper_language = load_key("whisper.language")
     language = load_key("whisper.detected_language") if whisper_language == 'auto' else whisper_language
diff --git a/install.py b/install.py
index 697f1752..2bb6b636 100644
--- a/install.py
+++ b/install.py
@@ -1,6 +1,7 @@
 import os, sys
 import platform
 import subprocess
+import shutil
 sys.path.append(os.path.dirname(os.path.abspath(__file__)))
 
 ascii_logo = """
@@ -87,6 +88,10 @@ def main():
     from core.utils.decorator import except_handler
 
     console = Console()
+
+    # copy defaule config.yaml to config.yaml
+    if not os.path.exists("config.yaml"):
+        shutil.copy("config.yaml.example", "config.yaml")
     
     width = max(len(line) for line in ascii_logo.splitlines()) + 4
     welcome_panel = Panel(