diff --git a/instruments/readers/config_text_reader.yaml b/instruments/readers/config_text_reader.yaml
index 555c429..a37bd72 100644
--- a/instruments/readers/config_text_reader.yaml
+++ b/instruments/readers/config_text_reader.yaml
@@ -30,7 +30,7 @@ HONO: #ICAD/HONO:
   file_encoding : 'latin-1'
   timestamp: ['Start Date/Time (UTC)'] 
   datetime_format: '%Y-%m-%d %H:%M:%S.%f'
-  link_to_description: 'dictionaries/ICAD_HONO.yaml'
+  link_to_description: 'dictionaries/ICAD.yaml'
 
 NO2: #ICAD/NO2:
   table_header : 'Start Date/Time (UTC)	Duration (s)	NO2 (ppb)	NO2 Uncertainty (ppb)	H2O (ppb)	H2O Uncertainty (ppb)	CHOCHO (ppb)	CHOCHO Uncertainty (ppb)	File Number	Light Intensity	#ICEDOAS iter.	Cell Pressure	Ambient Pressure	Cell Temp	Spec Temp	Lat	Lon	Height	Speed	GPSQuality	0-Air Ref. Time	0-Air Ref. Duration	0-Air Ref. File Number	0-Air Ref. Intensity	0-Air Ref. Rel Intensity	0-Air Ref. Intensity valid	MeasMode	SampleSource'
@@ -38,7 +38,7 @@ NO2: #ICAD/NO2:
   file_encoding : 'latin-1'
   timestamp: ['Start Date/Time (UTC)'] 
   datetime_format: '%Y-%m-%d %H:%M:%S.%f'
-  link_to_description: 'dictionaries/ICAD_NO2.yaml'
+  link_to_description: 'dictionaries/ICAD.yaml'
 
 Lopap:
   #table_header : 'Date;Time;Ch1;490.1;500.2;510.0;520.0;530.1;540.0;550.7;603.2;700.3;800.0;Ch2;500.5;510.3;520.5;530.7;540.8;550.5;550.8;560.9;570.9;581.2;586.2;591.2;596.1;601.1;606.4;611.3;'
diff --git a/instruments/readers/filereader_registry.py b/instruments/readers/filereader_registry.py
index 64b4fb5..fc4010d 100644
--- a/instruments/readers/filereader_registry.py
+++ b/instruments/readers/filereader_registry.py
@@ -15,7 +15,7 @@ default_instruments_dir = None  # or provide an absolute path
 file_readers = {
     'ibw': lambda a1: read_xps_ibw_file_as_dict(a1),
     'txt': lambda a1: read_txt_files_as_dict(a1, instruments_dir=default_instruments_dir, work_with_copy=False),
-    'TXT': lambda a1: read_txt_files_as_dict(a1, instruments_dir=default_instruments_dir, work_with_copy=False),
+#    'TXT': lambda a1: read_txt_files_as_dict(a1, instruments_dir=default_instruments_dir, work_with_copy=False),
     'dat': lambda a1: read_txt_files_as_dict(a1, instruments_dir=default_instruments_dir, work_with_copy=False),
     'csv': lambda a1: read_txt_files_as_dict(a1, instruments_dir=default_instruments_dir, work_with_copy=False)
 }
@@ -52,6 +52,7 @@ def compute_filereader_key_from_path(hdf5_file_path):
 
     # Extract the filename and its extension
     filename, file_extension = os.path.splitext(parts[-1])
+    file_extension = file_extension.lower()
     
     # Extract the first directory directly under the root directory '/' in the hdf5 file
     subfolder_name = parts[0] if len(parts) > 1 else ""