diff --git a/bioxelnodes/assets/Nodes/BioxelNodes_v1.0.0.blend b/bioxelnodes/assets/Nodes/BioxelNodes_v1.0.0.blend
index bd08aa5..6852c30 100644
--- a/bioxelnodes/assets/Nodes/BioxelNodes_v1.0.0.blend
+++ b/bioxelnodes/assets/Nodes/BioxelNodes_v1.0.0.blend
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:13ae301e135b547c9a348e2e7a0f2fbac42947e70c58a3a8b90875a23c5b0a4f
-size 8976894
+oid sha256:b541b9cbf734c398a47dd1d0ae4000f406e3728550a09aa720c5c0ad2626a7c1
+size 8979242
diff --git a/bioxelnodes/bioxel/parse.py b/bioxelnodes/bioxel/parse.py
index 556b035..a8705b4 100644
--- a/bioxelnodes/bioxel/parse.py
+++ b/bioxelnodes/bioxel/parse.py
@@ -61,7 +61,8 @@ def get_ext(filepath: Path) -> str:
     elif filepath.name.endswith(".map.gz"):
         return ".map.gz"
     else:
-        return filepath.suffix
+        suffix = filepath.suffix
+        return "" if len(suffix) > 5 else suffix
 
 
 def get_filename(filepath: Path):
@@ -310,6 +311,7 @@ def parse_volumetric_data(data_file: str, series_id="", progress_callback=None):
             def get_meta(key):
                 try:
                     stirng = reader.GetMetaData(0, key).removesuffix(" ")
+                    stirng.encode('utf-8')
                     if stirng in ["No study description",
                                   "No series description",
                                   ""]:
diff --git a/bioxelnodes/operators/io.py b/bioxelnodes/operators/io.py
index 9e90a73..b32ad33 100644
--- a/bioxelnodes/operators/io.py
+++ b/bioxelnodes/operators/io.py
@@ -391,6 +391,7 @@ def invoke(self, context, event):
                 def get_meta(key):
                     try:
                         stirng = single.GetMetaData(key).removesuffix(" ")
+                        stirng.encode('utf-8')
                         if stirng in ["No study description",
                                       "No series description",
                                       ""]:
@@ -416,13 +417,15 @@ def get_meta(key):
                 if series_id == "":
                     series_id = "empty"
 
-                series_items[series_id] = "{:<20} {:>1}".format(f"{study_description}>{series_description}({series_modality})",
+                label = "{:<20} {:>1}".format(f"{study_description}>{series_description}({series_modality})",
                                                                 f"({size_x}x{size_y})x{count}")
+                
+                series_items[series_id] = label
 
-            for key, value in series_items.items():
+            for series_id, label in series_items.items():
                 series_item = self.series_ids.add()
-                series_item.id = key
-                series_item.label = value
+                series_item.id = series_id
+                series_item.label = label
 
             if len(series_items.keys()) > 1:
                 self.skip_series_select = False