diff --git a/AppDelegate.h b/AppDelegate.h
index 3f8db52..b12b8e9 100755
--- a/AppDelegate.h
+++ b/AppDelegate.h
@@ -21,6 +21,7 @@
 #import "ResultsWindowController.h"
 
 #import <Cocoa/Cocoa.h>
+#import <OSLog/OSLog.h>
 
 /* GLOBALS */
 
diff --git a/AppDelegate.m b/AppDelegate.m
index e3a681f..dff7ca9 100755
--- a/AppDelegate.m
+++ b/AppDelegate.m
@@ -35,6 +35,29 @@ @implementation AppDelegate
 @synthesize categoryTableController;
 @synthesize resultsWindowController;
 
+//exception handler
+// show alert and log error
+void uncaughtExceptionHandler(NSException* exception) {
+    
+    //alert
+    NSAlert* alert = nil;
+    
+    //alloc/init alert
+    alert = [NSAlert alertWithMessageText:NSLocalizedString(@"ERROR:\nKnockKnock Encountered a Fatal Error", @"KnockKnock Encountered a Fatal Error") defaultButton:@"OK" alternateButton:nil otherButton:nil informativeTextWithFormat:NSLocalizedString(@"Exception: %@",@"Exception: %@"), exception];
+    
+    //show it
+    [alert runModal];
+    
+    //log
+    os_log_error(OS_LOG_DEFAULT, "KnockKnock crash: %{public}@", exception);
+    os_log_error(OS_LOG_DEFAULT, "KnockKnock crash (stack trace): %{public}@", [exception callStackSymbols]);
+    
+    //bye
+    exit(EXIT_FAILURE);
+    
+    return;
+}
+
 //center window
 // also make front
 -(void)awakeFromNib
@@ -57,6 +80,9 @@ -(void)applicationDidFinishLaunching:(NSNotification *)notification
     //defaults
     NSUserDefaults* defaults = nil;
     
+    //set exception handler
+    NSSetUncaughtExceptionHandler(&uncaughtExceptionHandler);
+    
     //init filter object
     itemFilter = [[Filter alloc] init];
     
diff --git a/Localizable.xcstrings b/Localizable.xcstrings
index 558bf71..b568faa 100644
--- a/Localizable.xcstrings
+++ b/Localizable.xcstrings
@@ -188,6 +188,9 @@
         }
       }
     },
+    "ERROR:\nKnockKnock Encountered a Fatal Error" : {
+      "comment" : "KnockKnock Encountered a Fatal Error"
+    },
     "ERROR:\nVirusTotal query for '%@' failed" : {
       "comment" : "ERROR:\nVirusTotal query for '%@' failed",
       "localizations" : {
@@ -221,6 +224,9 @@
         }
       }
     },
+    "Exception: %@" : {
+      "comment" : "Exception: %@"
+    },
     "extensions hosted in the browser" : {
       "comment" : "extensions hosted in the browser",
       "localizations" : {
@@ -526,6 +532,7 @@
     },
     "Submissions complete, though errors were encountered (HTTP response(s): %@)." : {
       "comment" : "Submissions complete, though errors were encountered (HTTP response(s): %@).",
+      "extractionState" : "stale",
       "localizations" : {
         "es" : {
           "stringUnit" : {
@@ -535,6 +542,9 @@
         }
       }
     },
+    "Submissions complete, though errors were encountered.\r\n(HTTP response(s): %@)." : {
+      "comment" : "Submissions complete, though errors were encountered.\r\n(HTTP response(s): %@)."
+    },
     "Submissions complete. (In subsequent scans item's VT detection ratios will now be displayed)." : {
       "comment" : "Submissions complete. (In subsequent scans item's VT detection ratios will now be displayed).",
       "localizations" : {
@@ -645,6 +655,9 @@
         }
       }
     },
+    "VirusTotal Results: Disabled" : {
+      "comment" : "VirusTotal Results: Disabled"
+    },
     "VirusTotal:\r\n %lu flagged item(s)\r\n %lu unknown item(s)" : {
       "comment" : "VirusTotal:\r\n %lu flagged item(s)\r\n %lu unknown item(s)",
       "localizations" : {
diff --git a/ResultsWindowController.m b/ResultsWindowController.m
index 4689ba8..29647e6 100755
--- a/ResultsWindowController.m
+++ b/ResultsWindowController.m
@@ -40,8 +40,25 @@ -(void)windowDidLoad
     //set details
     self.detailsLabel.stringValue = self.details;
     
-    //set unknown items
-    self.vtDetailsLabel.stringValue = self.vtDetails;
+    //set VT results
+    if(nil != self.vtDetails)
+    {
+        //set
+        self.vtDetailsLabel.stringValue = self.vtDetails;
+    }
+    //no VT results
+    // disabled? something else?
+    else
+    {
+        if(YES == ((AppDelegate*)[[NSApplication sharedApplication] delegate]).prefsWindowController.disableVTQueries)
+        {
+            self.vtDetailsLabel.stringValue = NSLocalizedString(@"VirusTotal Results: Disabled", @"VirusTotal Results: Disabled");
+        }
+        else
+        {
+            self.vtDetailsLabel.stringValue = @"VirusTotal: ?";
+        }
+    }
     
     //toggle 'Submit' button
     self.submitToVT.hidden = !(self.unknownItems.count);
@@ -87,6 +104,9 @@ -(IBAction)submitToVT:(id)sender
 //update UI now that submission is done
 -(void)submissionComplete:(NSUInteger)successes httpResponses:(NSMutableArray*)httpResponses
 {
+    //unique responses
+    NSSet* uniqueResponses = nil;
+    
     //enable close
     self.closeButton.enabled = YES;
     
@@ -101,10 +121,16 @@ -(void)submissionComplete:(NSUInteger)successes httpResponses:(NSMutableArray*)h
     }
     else
     {
+        //get just unique responses
+        uniqueResponses = [NSSet setWithArray:httpResponses];
+        
         //update message
-        self.submissionStatus.stringValue = [NSString stringWithFormat:NSLocalizedString(@"Submissions complete, though errors were encountered (HTTP response(s): %@).", @"Submissions complete, though errors were encountered (HTTP response(s): %@)."), [httpResponses componentsJoinedByString:@","]];
+        self.submissionStatus.stringValue = [NSString stringWithFormat:NSLocalizedString(@"Submissions complete, though errors were encountered.\r\n(HTTP response(s): %@)", @"Submissions complete, though errors were encountered.\r\n(HTTP response(s): %@)"), [[uniqueResponses allObjects] componentsJoinedByString:@","]];
     }
     
+    //then make action button first responder
+    [self.window makeFirstResponder:self.closeButton];
+    
     return;
 }