diff --git a/docs/source/Acknowledgments.md b/docs/source/Acknowledgments.md
index 55a1dbf4..3893562d 100644
--- a/docs/source/Acknowledgments.md
+++ b/docs/source/Acknowledgments.md
@@ -32,6 +32,9 @@ documentation and website. He tested the library on multiple corpora.
 **Paula Muñoz-Lago**, computer scientist, contributed to the initial code and first stages of the 
 tool.
 
+**Carlos Vaquero Patricio**, received a PhD from the Institute for Logic, Language and Computation (Music Cognition Group) at the University of Amsterdam. Joined Didone as a postdoc researcher (Data Scientist) in 2023. Contributed to the final stages of musif, debugging, developing and making it accessible to the MIR community.
+
+
 ### Acknowledgments
 `musif` is a result of the Didone Project, which has received funding from the European 
 Research Council (ERC) under the European Union’s Horizon 2020 research and innovation
diff --git a/run_extraction_example.py b/run_extraction_example.py
index f28cf160..a479914c 100644
--- a/run_extraction_example.py
+++ b/run_extraction_example.py
@@ -20,8 +20,13 @@
 cache_dir = None
 
 # csv file containing files which raised error and need to be reextracted
-# path_error = 'error_files.csv'
-# errored_files = list(pd.read_csv(path_error, low_memory=False)[FILE_NAME])
+try:
+    path_error = f'{DEST_PATH}/error_files.csv'
+    errored_files = list(pd.read_csv(path_error, low_memory=False)[FILE_NAME])
+except Exception:
+    # Handle the case where there is no file is empty
+    print("There is no error_files.csv, it will be created and loaded error files are included manually in it.")
+    pass
 
 # In case a partial extraction has been run, set here the previous df to avoid re-extracting these files.
 # prev_path = str(prefix / NAME) + '.csv'