diff --git a/BuildNotices.txt b/BuildNotices.txt
index 5dfc238..84472c4 100644
--- a/BuildNotices.txt
+++ b/BuildNotices.txt
@@ -25,19 +25,19 @@ Sign the pane:
 codesign -v -f -s "Developer ID Application: Your Name (ABCDEFG1234)" Hosts.prefPane
 
 Build Package (pane in folder "build"):
-pkgbuild --root build --identifier "nl.your-domain.hosts" --version "1.4.4" --install-location "/Library/PreferencePanes" --sign "Developer ID Installer: Your Name (ABCDEFG1234)" Hosts-PrefPane-1.4.4.pkg
+pkgbuild --root build --identifier "nl.your-domain.hosts" --version "1.4.5" --install-location "/Library/PreferencePanes" --sign "Developer ID Installer: Your Name (ABCDEFG1234)" Hosts-PrefPane-1.4.5.pkg
 
 To certify the installer, you need your ProviderShortname. For this, you have to give altool its app-specific password:
 xcrun altool --list-providers -u "your.name@your-domain.nl" -p "@keychain:Developer-altool"
 
 Certify package:
-xcrun altool --notarize-app --primary-bundle-id "nl.your-domain.hosts" --username "your.name@your-domain.nl" --password "@keychain:Developer-altool" --asc-provider "YourName123456" --file "Hosts-PrefPane-1.4.4.pkg"
+xcrun altool --notarize-app --primary-bundle-id "nl.your-domain.hosts" --username "your.name@your-domain.nl" --password "@keychain:Developer-altool" --asc-provider "YourName123456" --file "Hosts-PrefPane-1.4.5.pkg"
 
 Wait, check status:
 xcrun altool --notarization-info "YourRequestUUID" --username "your.name@your-domain.nl" --password "@keychain:Developer-altool"
 
 Staple notarization ticket to package for offline installation:
-xcrun stapler staple Hosts-PrefPane-1.4.4.pkg
+xcrun stapler staple Hosts-PrefPane-1.4.5.pkg
 
 
 Issue with Check Box disabling:
diff --git a/Hosts.xcodeproj/project.pbxproj b/Hosts.xcodeproj/project.pbxproj
index 0b29077..d53622b 100644
--- a/Hosts.xcodeproj/project.pbxproj
+++ b/Hosts.xcodeproj/project.pbxproj
@@ -451,7 +451,7 @@
 		29B97313FDCFA39411CA2CEA /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1130;
+				LastUpgradeCheck = 1200;
 				TargetAttributes = {
 					8D1107260486CEB800E47090 = {
 						DevelopmentTeam = PZV4XW8XL7;
@@ -652,7 +652,7 @@
 				CODE_SIGN_IDENTITY = "Mac Developer";
 				CODE_SIGN_STYLE = Automatic;
 				COPY_PHASE_STRIP = NO;
-				CURRENT_PROJECT_VERSION = 8;
+				CURRENT_PROJECT_VERSION = 10;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				DEPLOYMENT_POSTPROCESSING = NO;
 				DEVELOPMENT_TEAM = PZV4XW8XL7;
@@ -668,7 +668,7 @@
 				HEADER_SEARCH_PATHS = $SRCROOT;
 				INFOPLIST_FILE = "Hosts-Info.plist";
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
-				MARKETING_VERSION = 1.4.4;
+				MARKETING_VERSION = 1.4.5;
 				OTHER_LDFLAGS = "";
 				PRODUCT_BUNDLE_IDENTIFIER = "de.dirk-froehling.hosts";
 				PRODUCT_NAME = Hosts;
@@ -683,7 +683,7 @@
 				CLANG_ENABLE_OBJC_WEAK = YES;
 				CODE_SIGN_IDENTITY = "Mac Developer";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 8;
+				CURRENT_PROJECT_VERSION = 10;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				DEPLOYMENT_POSTPROCESSING = NO;
 				DEVELOPMENT_TEAM = PZV4XW8XL7;
@@ -693,7 +693,7 @@
 				HEADER_SEARCH_PATHS = $SRCROOT;
 				INFOPLIST_FILE = "Hosts-Info.plist";
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
-				MARKETING_VERSION = 1.4.4;
+				MARKETING_VERSION = 1.4.5;
 				ONLY_ACTIVE_ARCH = YES;
 				OTHER_LDFLAGS = "";
 				PRODUCT_BUNDLE_IDENTIFIER = "de.dirk-froehling.hosts";
@@ -707,7 +707,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
-				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ENABLE_OBJC_ARC = NO;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
@@ -721,6 +721,7 @@
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -755,7 +756,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
-				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ENABLE_OBJC_ARC = NO;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
@@ -769,6 +770,7 @@
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -827,7 +829,7 @@
 				CLANG_ENABLE_OBJC_WEAK = YES;
 				CODE_SIGN_IDENTITY = "Mac Developer";
 				COPY_PHASE_STRIP = NO;
-				CURRENT_PROJECT_VERSION = 8;
+				CURRENT_PROJECT_VERSION = 10;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				DEVELOPMENT_TEAM = PZV4XW8XL7;
 				GCC_DYNAMIC_NO_PIC = NO;
@@ -845,7 +847,7 @@
 				INFOPLIST_FILE = "HostsPrefpane/HostsPrefpane-Info.plist";
 				INSTALL_PATH = "$(HOME)/Library/PreferencePanes";
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
-				MARKETING_VERSION = 1.4.4;
+				MARKETING_VERSION = 1.4.5;
 				PRODUCT_BUNDLE_IDENTIFIER = "de.dirk-froehling.hosts";
 				PRODUCT_NAME = Hosts;
 				PROVISIONING_PROFILE = "";
@@ -861,7 +863,7 @@
 				CLANG_ENABLE_OBJC_WEAK = YES;
 				CODE_SIGN_IDENTITY = "Mac Developer";
 				COPY_PHASE_STRIP = YES;
-				CURRENT_PROJECT_VERSION = 8;
+				CURRENT_PROJECT_VERSION = 10;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				DEVELOPMENT_TEAM = PZV4XW8XL7;
 				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
@@ -873,7 +875,7 @@
 				INFOPLIST_FILE = "HostsPrefpane/HostsPrefpane-Info.plist";
 				INSTALL_PATH = "$(HOME)/Library/PreferencePanes";
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
-				MARKETING_VERSION = 1.4.4;
+				MARKETING_VERSION = 1.4.5;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_BUNDLE_IDENTIFIER = "de.dirk-froehling.hosts";
 				PRODUCT_NAME = Hosts;
diff --git a/Hosts.xcodeproj/xcshareddata/xcschemes/HostsApp.xcscheme b/Hosts.xcodeproj/xcshareddata/xcschemes/HostsApp.xcscheme
index e5e4d1c..640ff91 100644
--- a/Hosts.xcodeproj/xcshareddata/xcschemes/HostsApp.xcscheme
+++ b/Hosts.xcodeproj/xcshareddata/xcschemes/HostsApp.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1130"
+   LastUpgradeVersion = "1200"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/Hosts.xcodeproj/xcshareddata/xcschemes/HostsPrefpane.xcscheme b/Hosts.xcodeproj/xcshareddata/xcschemes/HostsPrefpane.xcscheme
index a44aabf..7477499 100644
--- a/Hosts.xcodeproj/xcshareddata/xcschemes/HostsPrefpane.xcscheme
+++ b/Hosts.xcodeproj/xcshareddata/xcschemes/HostsPrefpane.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1130"
+   LastUpgradeVersion = "1200"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -29,8 +29,6 @@
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -51,8 +49,6 @@
             ReferencedContainer = "container:Hosts.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"
diff --git a/Hosts.xcodeproj/xcshareddata/xcschemes/parser.xcscheme b/Hosts.xcodeproj/xcshareddata/xcschemes/parser.xcscheme
index b472288..e04bcfe 100644
--- a/Hosts.xcodeproj/xcshareddata/xcschemes/parser.xcscheme
+++ b/Hosts.xcodeproj/xcshareddata/xcschemes/parser.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1130"
+   LastUpgradeVersion = "1200"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -29,8 +29,6 @@
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -51,8 +49,6 @@
             ReferencedContainer = "container:Hosts.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"
diff --git a/README.mdown b/README.mdown
index 7c90c70..37210d2 100644
--- a/README.mdown
+++ b/README.mdown
@@ -26,7 +26,7 @@ for helping getting the latest release done!
 ![](https://github.com/specialunderwear/Hosts.prefpane/raw/master/screenshots/edit.png)
 
 ## Download
-For now you'll find the latest pre-built preference pane and the app on  [Dirk-'s website](https://www.dirk-froehling.de/downloads/downloads.html). ``Hosts App 1.4.4.zip`` includes the app which can be used from any location on your disk. ``Hosts PrefPane 1.4.4.pkg`` is an installer for the preference pane. It will get installed into ``/Library/PreferencePanes``, so you have to enter your admin credentials during installation. The installer is neccessary for macOS Catalina, since all executables have to be notarized, and you cannot notarize a preference pane.
+For now you'll find the latest pre-built preference pane and the app on  [Dirk-'s website](https://www.dirk-froehling.de/downloads/downloads.html). ``Hosts App 1.4.5.zip`` includes the app which can be used from any location on your disk. ``Hosts PrefPane 1.4.5.pkg`` is an installer for the preference pane. It will get installed into ``/Library/PreferencePanes``, so you have to enter your admin credentials during installation. The installer is neccessary for macOS Catalina, since all executables have to be notarized, and you cannot notarize a preference pane.
 
 ## Development hints
 ###  Compiling the parser
diff --git a/c/parser/Makefile b/c/parser/Makefile
index 631e229..73e5b2b 100755
--- a/c/parser/Makefile
+++ b/c/parser/Makefile
@@ -30,16 +30,16 @@ ifneq ($(BISON_VERSION_GT_2_5), 1)
 endif
 
 all: .PHONY libs
-	gcc -o hosts -g main.c hostsparser.o
+	gcc -Wno-implicit-function-declaration -o hosts -g main.c hostsparser.o
 
 libs: .PHONY
 	$(BISON_PATH) -d hostsparser.y
 	flex --header-file=hostsscanner.h hostsparser.yy
 	$(BISON_PATH) --report=state hostsparser.y
-	cc -c -g hosts.c lex.NLPERMANENTMARKERSHOSTS.c hostsparser.tab.c
+	cc -Wno-implicit-function-declaration -c -g hosts.c lex.NLPERMANENTMARKERSHOSTS.c hostsparser.tab.c
 	ld -r hosts.o lex.NLPERMANENTMARKERSHOSTS.o hostsparser.tab.o -o hostsparser.o
 release: clean libs
-	gcc -O3 -o hosts main.c hostsparser.o
+	gcc -Wno-implicit-function-declaration -O3 -o hosts main.c hostsparser.o
 	strip hosts
 
 clean:
diff --git a/pm/controllers/NLPERMANENTMARKERSHOSTSListController.m b/pm/controllers/NLPERMANENTMARKERSHOSTSListController.m
index 1441004..67cb48a 100644
--- a/pm/controllers/NLPERMANENTMARKERSHOSTSListController.m
+++ b/pm/controllers/NLPERMANENTMARKERSHOSTSListController.m
@@ -58,11 +58,14 @@ - (IBAction) confirmDeleteItem:(id)sender {
     NSUInteger at_index = [self selectionIndex];
     NLPERMANENTMARKERSHOSTSHostEntry *entry = [[self arrangedObjects] objectAtIndex:at_index];
     
-    NSString *title = NSLocalizedString(@"Confirm deletion", @"deletion: title");
-    NSString *description = NSLocalizedString(
-            @"Are you sure you want to permanently remove:\n%@ from /etc/hosts?", @"deletion: message format string");
+    NSString *title = [[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Confirm deletion" value:@"" table:nil];
+    NSString *description = [[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Are you sure you want to permanently remove:\n%@ from /etc/hosts?" value:@"" table:nil];
     description = [NSString stringWithFormat:description, [entry toString]];
-    NSAlert *alert = [NSAlert alertWithMessageText:title defaultButton:NSLocalizedString(@"Yes", nil) alternateButton:NSLocalizedString(@"No", nil) otherButton:nil informativeTextWithFormat:@"%@", description];
+    NSAlert *alert = [NSAlert alertWithMessageText:title
+                                     defaultButton:[[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Yes" value:@"" table:nil]
+                                   alternateButton:[[NSBundle bundleForClass: [self class]] localizedStringForKey:@"No" value:@"" table:nil]
+                                       otherButton:nil
+                         informativeTextWithFormat:@"%@", description];
     [alert beginSheetModalForWindow:[[NSApplication sharedApplication] mainWindow] modalDelegate:self didEndSelector:@selector(alertEnded:code:context:) contextInfo:NULL];
 }
 
diff --git a/pm/models/NLPERMANENTMARKERSHOSTSFileModel.m b/pm/models/NLPERMANENTMARKERSHOSTSFileModel.m
index cc445a7..afec8f5 100644
--- a/pm/models/NLPERMANENTMARKERSHOSTSFileModel.m
+++ b/pm/models/NLPERMANENTMARKERSHOSTSFileModel.m
@@ -68,10 +68,10 @@ - (void) insertObject:(id)object inHostsAtIndex:(NSUInteger) index {
     if (undoManager != nil) {
         [[undoManager prepareWithInvocationTarget:self] removeObjectFromHostsAtIndex:index];
         if ([undoManager isUndoing]) {
-            NSString * undoActionName = NSLocalizedString(@"Delete host entry", @"undo: redo insert");
+            NSString * undoActionName = [[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Delete host entry" value:@"" table:nil];
             [undoManager setActionName:undoActionName];
         } else {
-            NSString * undoActionName = NSLocalizedString(@"Insert host entry", @"undo: undo delete");
+            NSString * undoActionName = [[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Insert host entry" value:@"" table:nil];
             [undoManager setActionName:undoActionName];
         }
     }
@@ -83,10 +83,10 @@ - (void) removeObjectFromHostsAtIndex:(NSUInteger) index {
         [undoManager removeAllActionsWithTarget:deletedObject];
         [[undoManager prepareWithInvocationTarget:self] insertObject:deletedObject inHostsAtIndex:index];
         if ([undoManager isUndoing]) {
-            NSString * undoActionName = NSLocalizedString(@"Insert host entry", @"undo: redo delete");
+            NSString * undoActionName = [[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Insert host entry" value:@"" table:nil];
             [undoManager setActionName:undoActionName];
         } else {
-            NSString * undoActionName = NSLocalizedString(@"Delete host entry", @"undo: undo insert");
+            NSString * undoActionName = [[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Delete host entry" value:@"" table:nil];
             [undoManager setActionName:undoActionName];        
         }
     }
diff --git a/pm/models/NLPERMANENTMARKERSHOSTSHostEntry.m b/pm/models/NLPERMANENTMARKERSHOSTSHostEntry.m
index 09fd180..4780048 100644
--- a/pm/models/NLPERMANENTMARKERSHOSTSHostEntry.m
+++ b/pm/models/NLPERMANENTMARKERSHOSTSHostEntry.m
@@ -77,7 +77,7 @@ - (void) pushUndoState:(NSDictionary *)change withManager:(NSUndoManager *)undoM
     }
     NSLog(@"old value %@", oldValue);
     [[undoManager prepareWithInvocationTarget:self] setValue:oldValue forKeyPath:keyPath];
-    NSString * undoActionName = NSLocalizedString(@"Edit", @"undo: undo edit");
+    NSString * undoActionName = [[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Edit" value:@"" table:nil];
     [undoManager setActionName:undoActionName];
 
 }
@@ -101,7 +101,7 @@ - (BOOL) validateAddress:(id *)ioValue error:(NSError **)outError {
     } else {
         NSLog(@"is not an ip");
         if (outError != NULL) {
-            NSString * errorStr = NSLocalizedString(@"Please enter a valid ip address", @"validation: valid ip address");
+            NSString * errorStr = [[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Please enter a valid ip address" value:@"" table:nil];
             NSDictionary * userInfoDict = [NSDictionary dictionaryWithObject:errorStr
                                                                       forKey:NSLocalizedDescriptionKey];
             NSError *error = [NSError errorWithDomain:PM_HOST_ENTRY_ERROR_DOMAIN
@@ -130,8 +130,7 @@ - (BOOL) validateHostnames:(id *)ioValue error:(NSError **) outError {
         return YES;
     } else {
         if (outError != NULL) {
-            NSString * errorStr = NSLocalizedString(@"Please enter a valid hostname",
-                                                             @"validation: valid hostname");
+            NSString * errorStr = [[NSBundle bundleForClass: [self class]] localizedStringForKey:@"Please enter a valid hostname" value:@"" table:nil];
             NSDictionary * userInfoDict = [NSDictionary dictionaryWithObject:errorStr
                                                                       forKey:NSLocalizedDescriptionKey];
             NSError *error = [NSError errorWithDomain:PM_HOST_ENTRY_ERROR_DOMAIN
diff --git a/pm/utils/NLPERMANENTMARKERSHOSTSParserCallbacks.m b/pm/utils/NLPERMANENTMARKERSHOSTSParserCallbacks.m
index b6f0f0f..956326d 100644
--- a/pm/utils/NLPERMANENTMARKERSHOSTSParserCallbacks.m
+++ b/pm/utils/NLPERMANENTMARKERSHOSTSParserCallbacks.m
@@ -20,6 +20,17 @@
 #import "pm/utils/NLPERMANENTMARKERSHOSTSParserCallbacks.h"
 #import "pm/models/NLPERMANENTMARKERSHOSTSHostEntry.h"
 
+
+// We need a class here to find the NSBundle for string localization.
+// In case we run this as a Pref Pane, NSLocalizedString does not help, and since the
+// strings are needed outside a class, we just declare one here.
+@interface LocalizationSupportClass: NSObject
+@end
+
+@implementation LocalizationSupportClass
+@end
+
+
 // defined in NLPERMANENTMARKERSHOSTSFileModel.m
 extern NSMutableArray * NLPERMANENTMARKERSHOSTShostsEntries;
 
@@ -33,13 +44,24 @@ void NLPERMANENTMARKERSHOSTSonHostEntryFound(NLPERMANENTMARKERSHOSTS_CHostEntry
 
 // error handler for the hosts file parser
 void NLPERMANENTMARKERSHOSTSonHostsParseError(NLPERMANENTMARKERSHOSTS_CHostEntryError * error) {
-    NSString *windowTitle = NSLocalizedString(@"Parse error", @"error: title");
-    NSString *errorFormatString = NSLocalizedString(@"In /private/etc/hosts on line:%i %s\n\n%s\n\nShould this line be permanently removed from /private/etc/hosts?\nChoose no to quit Hosts and manually correct the error.",
-                                                             @"error: description");
+    LocalizationSupportClass *foo = [[LocalizationSupportClass alloc] init];
+    NSBundle *myBundle = [NSBundle bundleForClass:[foo class]];
+
+    NSString *windowTitle = [myBundle localizedStringForKey:@"Parse error" value:@"" table:nil];
+    NSString *errorFormatString = [myBundle localizedStringForKey:@"In /private/etc/hosts on line:%i %s\n\n%s\n\nShould this line be permanently removed from /private/etc/hosts?\nChoose no to quit Hosts and manually correct the error."
+                                                            value:@""
+                                                            table:nil];
+
     NSString *errorString = [NSString stringWithFormat:errorFormatString, error->linenumber, error->token, error->error];
     
-    NSInteger choice = NSRunAlertPanel(windowTitle, @"%@", errorString, NSLocalizedString(@"No", nil), nil, NSLocalizedString(@"Yes", nil));
-    if (choice == NSAlertDefaultReturn) {
+    NSAlert *alert = [NSAlert
+                      alertWithMessageText:windowTitle
+                      defaultButton:[myBundle localizedStringForKey:@"Yes" value:@"" table:nil]
+                      alternateButton:[myBundle localizedStringForKey:@"No" value:@"" table:nil]
+                      otherButton:nil
+                      informativeTextWithFormat:@"%@", errorString];
+
+    if ([alert runModal] == NSModalResponseCancel) {
         [[NSApplication sharedApplication] terminate:nil];
     }
 }