diff --git a/patient_data_fields.py b/patient_data_fields.py
index 6b260e9..5a15cb7 100644
--- a/patient_data_fields.py
+++ b/patient_data_fields.py
@@ -266,10 +266,13 @@ def check_session_fields(self):
             return "Data recorder not set!"
         elif self.patient_vars[PatientDataVar.PRIM_DATA].get() == "":
             return "Data type not set!"
-        elif int(self.patient_vars[PatientDataVar.SESS_NUM].get()) < self.session_number and self.patient_vars[
-            PatientDataVar.PRIM_DATA].get() == "Primary":
-            return "Session number already exists!"
-        else:
+        try:
+            if int(self.patient_vars[PatientDataVar.SESS_NUM].get()) < self.session_number and self.patient_vars[
+                PatientDataVar.PRIM_DATA].get() == "Primary":
+                return "Session number already exists!"
+            else:
+                return False
+        except ValueError as e:
             return False
 
     def lock_session_fields(self):
diff --git a/project_setup_ui.py b/project_setup_ui.py
index c92a87a..7d6de36 100644
--- a/project_setup_ui.py
+++ b/project_setup_ui.py
@@ -474,6 +474,7 @@ def import_concern_ksf(self):
             print(f"WARNING: No tracker file selected")
 
     def populate_frequency_treeview(self):
+        self.clear_frequency_treeview()
         self.frequency_treeview_parents.append(
             self.frequency_key_treeview.insert("", 'end', str(0), text="Create New Frequency Key",
                                                tags=treeview_tags[2]))
@@ -493,6 +494,7 @@ def clear_duration_treeview(self):
         self.duration_treeview_parents = []
 
     def populate_duration_treeview(self):
+        self.clear_duration_treeview()
         self.duration_treeview_parents.append(
             self.duration_key_treeview.insert("", 'end', str(0), text="Create New Duration Key",
                                               tags=treeview_tags[2]))
diff --git a/ui_params.py b/ui_params.py
index 2fd3c9f..76e885f 100644
--- a/ui_params.py
+++ b/ui_params.py
@@ -1,4 +1,4 @@
-cometrics_version = "1.0.8"
+cometrics_version = "1.0.9"
 ui_title = f"cometrics v{cometrics_version}"
 
 cometrics_data_root = fr'C:\cometrics'