diff --git a/EduNetworkBuilder/NetworkBuilder.cs b/EduNetworkBuilder/NetworkBuilder.cs
index 66232a4..1b7fb83 100644
--- a/EduNetworkBuilder/NetworkBuilder.cs
+++ b/EduNetworkBuilder/NetworkBuilder.cs
@@ -1720,7 +1720,14 @@ namespace EduNetworkBuilder
             if (filename == "")
             {
                 MessageBox.Show(NB.Translate("NB_InvalidFile"));
-                Close();
+                //Close();
+                return;
+            }
+            if (!File.Exists(filename))
+            {
+                MessageBox.Show(string.Format(NB.Translate("NB_NoSuchFile"),filename));
+                //Close();
+                return;
             }
             //If it is a network file
             string extension = Path.GetExtension(filename).ToLower();
diff --git a/EduNetworkBuilder/Resources/languages/edustrings.resx b/EduNetworkBuilder/Resources/languages/edustrings.resx
index 0cb465e..98309a8 100644
--- a/EduNetworkBuilder/Resources/languages/edustrings.resx
+++ b/EduNetworkBuilder/Resources/languages/edustrings.resx
@@ -1773,6 +1773,10 @@
     <value>Mark As Graded</value>
     <comment>NB_MarkGraded = Mark As Graded</comment>
   </data>
+  <data name="NB_NoSuchFile" xml:space="preserve">
+    <value>File does not exist: {0}</value>
+    <comment>NB_NoSuchFile = File does not exist: {0}</comment>
+  </data>
   <data name="NB_NotImplimented" xml:space="preserve">
     <value>This feature is not yet implimented.</value>
     <comment>NB_NotImplimented = This feature is not yet implimented.</comment>