diff --git a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/Bundle.properties b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/Bundle.properties
index 76895be76a..9681229663 100644
--- a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/Bundle.properties
+++ b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/Bundle.properties
@@ -21,7 +21,7 @@ FileExtMismatchConfigPanel.removeExtButton.noneSelected=No extension selected\!
 FileExtMismatchConfigPanel.removeExtButton.noMimeTypeSelected=No MIME type selected\!
 FileExtMismatchConfigPanel.removeExtButton.deleted=Extension {0} deleted.
 FileExtMismatchConfigPanel.store.msg=Saved.
-FileExtMismatchConfigPanel.store.msgDlg.msg=Writing XML configuration file failed.
+FileExtMismatchConfigPanel.store.msgDlg.msg=Writing configuration file failed.
 FileExtMismatchConfigPanel.save.msgDlg.title=Save Error
 FileExtMismatchConfigPanel.ok.confDlg.msg=Would you like to save configuration changes?
 FileExtMismatchConfigPanel.confDlg.title=Unsaved Changes
diff --git a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchSettingsPanel.java b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchSettingsPanel.java
index 92788d2308..2eea561575 100644
--- a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchSettingsPanel.java
+++ b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchSettingsPanel.java
@@ -583,8 +583,7 @@ final class FileExtMismatchSettingsPanel extends IngestModuleGlobalSettingsPanel
             // Load the configuration into a buffer that the user can modify. They can choose
             // to save it back to the file after making changes.
             editableMap = FileExtMismatchXML.getDefault().load();
-            updateMimeList();
-            updateExtList();
+
         } catch (FileExtMismatchXML.FileExtMismatchException ex) {
             //error
             JOptionPane.showMessageDialog(this,
@@ -594,6 +593,8 @@ final class FileExtMismatchSettingsPanel extends IngestModuleGlobalSettingsPanel
                             "FileExtMismatchConfigPanel.save.msgDlg.title"),
                     JOptionPane.ERROR_MESSAGE);
         }
+        updateMimeList();
+        updateExtList();
     }
 
     @Override
diff --git a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchXML.java b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchXML.java
index fc3cc01336..630bc6add5 100644
--- a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchXML.java
+++ b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchXML.java
@@ -90,9 +90,7 @@ class FileExtMismatchXML {
      *
      * @return Loaded hash map or null on error or null if data does not exist
      */
-    public HashMap<String, String[]> load() throws FileExtMismatchException {
-        throw new FileExtMismatchException("");
-        /*HashMap<String, String[]> sigTypeToExtMap = new HashMap<>();
+    public HashMap<String, String[]> load() throws FileExtMismatchException {HashMap<String, String[]> sigTypeToExtMap = new HashMap<>();
         File serializedFile = new File(DEFAULT_SERIALIZED_FILE_PATH);
         if (serializedFile.exists()) {
             try {
@@ -148,7 +146,7 @@ class FileExtMismatchXML {
             logger.log(Level.SEVERE, "Error loading config file.", e); //NON-NLS
             return null;
         }
-        return sigTypeToExtMap;*/
+        return sigTypeToExtMap;
     }
 
     /**
@@ -160,14 +158,13 @@ class FileExtMismatchXML {
      * @return Loaded hash map or null on error or null if data does not exist
      */
     public boolean save(HashMap<String, String[]> sigTypeToExtMap) throws FileExtMismatchException {
-        throw new FileExtMismatchException("");
-        /*try (NbObjectOutputStream out = new NbObjectOutputStream(new FileOutputStream(DEFAULT_SERIALIZED_FILE_PATH))) {
+        try (NbObjectOutputStream out = new NbObjectOutputStream(new FileOutputStream(DEFAULT_SERIALIZED_FILE_PATH))) {
             FileExtMismatchSettings settings = new FileExtMismatchSettings(sigTypeToExtMap);
             out.writeObject(settings);
             return true;
         } catch (IOException ex) {
             throw new FileExtMismatchException(String.format("Failed to write settings to %s", DEFAULT_SERIALIZED_FILE_PATH), ex);
-        }*/
+        }
     }
 
     /**