diff --git a/src/coastseg/common.py b/src/coastseg/common.py
index 387c2d8f..0639f9ec 100644
--- a/src/coastseg/common.py
+++ b/src/coastseg/common.py
@@ -1208,24 +1208,21 @@ def download_url(url: str, save_path: str, filename: str = None, chunk_size: int
         content_length = r.headers.get("Content-Length")
         if content_length:
             total_length = int(content_length)
+            with open(save_path, "wb") as fd:
+                with tqdm(
+                    total=total_length,
+                    unit="B",
+                    unit_scale=True,
+                    unit_divisor=1024,
+                    desc=f"Downloading {filename}",
+                    initial=0,
+                    ascii=True,
+                ) as pbar:
+                    for chunk in r.iter_content(chunk_size=chunk_size):
+                        fd.write(chunk)
+                        pbar.update(len(chunk))
         else:
-            print(
-                "Content length not found in response headers. Downloading without progress bar."
-            )
-            total_length = None
-        with open(save_path, "wb") as fd:
-            with tqdm(
-                total=total_length,
-                unit="B",
-                unit_scale=True,
-                unit_divisor=1024,
-                desc=f"Downloading {filename}",
-                initial=0,
-                ascii=True,
-            ) as pbar:
-                for chunk in r.iter_content(chunk_size=chunk_size):
-                    fd.write(chunk)
-                    pbar.update(len(chunk))
+            logger.warning("Content length not found in response headers")
 
 
 def get_center_point(coords: list) -> tuple:
@@ -1241,6 +1238,31 @@ def get_center_point(coords: list) -> tuple:
     return center_x, center_y
 
 
+def convert_linestrings_to_multipoints(gdf: gpd.GeoDataFrame) -> gpd.GeoDataFrame:
+    """
+    Convert LineString geometries in a GeoDataFrame to MultiPoint geometries.
+    Args:
+    - gdf (gpd.GeoDataFrame): The input GeoDataFrame.
+    Returns:
+    - gpd.GeoDataFrame: A new GeoDataFrame with MultiPoint geometries. If the input GeoDataFrame
+                        already contains MultiPoints, the original GeoDataFrame is returned.
+    """
+
+    # Check if the gdf already contains MultiPoints
+    if any(gdf.geometry.type == "MultiPoint"):
+        return gdf
+
+    def linestring_to_multipoint(linestring):
+        if isinstance(linestring, LineString):
+            return MultiPoint(linestring.coords)
+        return linestring
+
+    # Convert each LineString to a MultiPoint
+    gdf["geometry"] = gdf["geometry"].apply(linestring_to_multipoint)
+
+    return gdf
+
+
 def get_epsg_from_geometry(geometry: "shapely.geometry.polygon.Polygon") -> int:
     """Uses geometry of shapely rectangle in crs 4326 to return the most accurate
     utm code as a string of format 'epsg:utm_code'
@@ -1645,7 +1667,7 @@ def save_extracted_shorelines(
         geomtype="lines",
     )
 
-    # Save extracted shorelines as a GeoJSON file
+    # Save extracted shorelines to GeoJSON files
     extracted_shorelines.to_file(
         save_path, "extracted_shorelines_lines.geojson", extracted_shorelines_gdf_lines
     )
diff --git a/src/coastseg/extracted_shoreline.py b/src/coastseg/extracted_shoreline.py
index f733f365..2b478ddc 100644
--- a/src/coastseg/extracted_shoreline.py
+++ b/src/coastseg/extracted_shoreline.py
@@ -285,6 +285,12 @@ def combine_satellite_data(satellite_data: dict) -> dict:
 
     # Fill the satellite_data dict
     for satname, sat_data in satellite_data.items():
+        satellite_data[satname].setdefault("dates", [])
+        satellite_data[satname].setdefault("geoaccuracy", [])
+        satellite_data[satname].setdefault("shorelines", [])
+        satellite_data[satname].setdefault("cloud_cover", [])
+        satellite_data[satname].setdefault("filename", [])
+        satellite_data[satname].setdefault("idx", [])
         satellite_data[satname].setdefault("dates", [])
         satellite_data[satname].setdefault("geoaccuracy", [])
         satellite_data[satname].setdefault("shorelines", [])
diff --git a/src/coastseg/map_UI.py b/src/coastseg/map_UI.py
index 00ed9978..e8776fd7 100644
--- a/src/coastseg/map_UI.py
+++ b/src/coastseg/map_UI.py
@@ -612,7 +612,7 @@ def get_beach_area_slider(self):
 
         self.beach_area_slider = ipywidgets.IntSlider(
             value=1000,
-            min=10,
+            min=5,
             max=10000,
             step=10,
             description="min_beach_area (sqm):",
@@ -741,7 +741,7 @@ def get_min_length_sl_slider(self):
 
         self.min_length_sl_slider = ipywidgets.IntSlider(
             value=500,
-            min=50,
+            min=5,
             max=1000,
             step=1,
             description="min_length_sl (m):",
diff --git a/src/coastseg/settings_UI.py b/src/coastseg/settings_UI.py
index 988ddffb..b026f719 100644
--- a/src/coastseg/settings_UI.py
+++ b/src/coastseg/settings_UI.py
@@ -168,7 +168,7 @@ def get_beach_area_slider(self):
 
         self.beach_area_slider = ipywidgets.IntSlider(
             value=4500,
-            min=100,
+            min=5,
             max=10000,
             step=10,
             description="min_beach_area (sqm):",
@@ -233,7 +233,7 @@ def get_cloud_slider(self):
 
         self.cloud_slider = ipywidgets.IntSlider(
             value=300,
-            min=100,
+            min=0,
             max=1000,
             step=1,
             description="dist_clouds (m):",