diff --git a/birdnet_analyzer/gui/multi_file.py b/birdnet_analyzer/gui/multi_file.py
index ac426c3d..ade2135b 100644
--- a/birdnet_analyzer/gui/multi_file.py
+++ b/birdnet_analyzer/gui/multi_file.py
@@ -3,6 +3,7 @@
 import birdnet_analyzer.localization as loc
 import birdnet_analyzer.gui.utils as gu
 import birdnet_analyzer.gui.analysis as ga
+import birdnet_analyzer.config as cfg
 
 
 OUTPUT_TYPE_MAP = {
@@ -44,6 +45,9 @@ def runBatchAnalysis(
 
     if species_list_choice == gu._CUSTOM_SPECIES:
         gu.validate(species_list_file, loc.localize("validation-no-species-list-selected"))
+    
+    if fmin is None or fmax is None or fmin < cfg.SIG_FMIN or fmax > cfg.SIG_FMAX or fmin > fmax:
+        raise gr.Error(f"{loc.localize('validation-no-valid-frequency')} [{cfg.SIG_FMIN}, {cfg.SIG_FMAX}]")
 
     return ga.runAnalysis(
         None,
diff --git a/birdnet_analyzer/gui/single_file.py b/birdnet_analyzer/gui/single_file.py
index cfe040d8..fee42277 100644
--- a/birdnet_analyzer/gui/single_file.py
+++ b/birdnet_analyzer/gui/single_file.py
@@ -5,6 +5,7 @@
 import birdnet_analyzer.localization as loc
 import birdnet_analyzer.gui.utils as gu
 import birdnet_analyzer.gui.analysis as ga
+import birdnet_analyzer.config as cfg
 
 
 def runSingleFileAnalysis(
@@ -27,7 +28,13 @@ def runSingleFileAnalysis(
     import csv
     from datetime import timedelta
 
+    if species_list_choice == gu._CUSTOM_SPECIES:
+        gu.validate(species_list_file, loc.localize("validation-no-species-list-selected"))
+
     gu.validate(input_path, loc.localize("validation-no-file-selected"))
+    
+    if fmin is None or fmax is None or fmin < cfg.SIG_FMIN or fmax > cfg.SIG_FMAX or fmin > fmax:
+        raise gr.Error(f"{loc.localize('validation-no-valid-frequency')} [{cfg.SIG_FMIN}, {cfg.SIG_FMAX}]")
 
     result_filepath = ga.runAnalysis(
         input_path,
diff --git a/birdnet_analyzer/gui/species.py b/birdnet_analyzer/gui/species.py
index f1b2e3f9..f1558a6e 100644
--- a/birdnet_analyzer/gui/species.py
+++ b/birdnet_analyzer/gui/species.py
@@ -40,7 +40,7 @@ def select_directory_and_update_tb(name_tb):
                 loc.set_state("species-output-dir", dir_name)
                 return (
                     dir_name,
-                    gr.Textbox(label=dir_name[0] + os.sep, visible=True, value=name_tb),
+                    gr.Textbox(label=dir_name, visible=True, value=name_tb),
                 )
 
             return None, name_tb
diff --git a/birdnet_analyzer/gui/train.py b/birdnet_analyzer/gui/train.py
index eca43859..8fa4d2c9 100644
--- a/birdnet_analyzer/gui/train.py
+++ b/birdnet_analyzer/gui/train.py
@@ -224,7 +224,7 @@ def select_directory_and_update_tb():
                     if dir_name:
                         return (
                             dir_name,
-                            gr.Textbox(label=dir_name + os.sep, visible=True),
+                            gr.Textbox(label=dir_name, visible=True),
                             gr.Radio(visible=True, interactive=True),
                         )
 
@@ -401,8 +401,8 @@ def select_directory_and_update():
 
                     if dir_name:
                         return (
-                            dir_name[0],
-                            gr.Textbox(label=dir_name[0] + "\\", visible=True),
+                            dir_name,
+                            gr.Textbox(label=dir_name, visible=True),
                         )
 
                     return None, None