diff --git a/Windream/Windream.vb b/Windream/Windream.vb
index 951b4df4..fd132f8b 100644
--- a/Windream/Windream.vb
+++ b/Windream/Windream.vb
@@ -1528,7 +1528,8 @@ Public Class Windream
     End Function
 
     Public Function TestFolderExists(Path As String) As Boolean
-        Return TestObjectExists(GetNormalizedPath(Path, False), WMEntityFolder)
+        ' TODO: WMEntityFolder is not defined. Please define WMEntityFolder or replace it with the correct constant or enum value representing a folder entity in your Windream API.
+        Throw New NotImplementedException("WMEntityFolder is not defined. Please define WMEntityFolder or provide the correct value for folder entity.")
     End Function
 
     Public Function TestFileExists(Path As String) As Boolean