Pop up UIViewController with an IBAction UIViewController not functioning

 @interface MainViewController : UIViewController <LoginDelegate,WEPopoverParentView,PopoverControllerDelegate,MainMenuDelegate,MKMapViewDelegate,UIActionSheetDelegate,UIAccelerometerDelegate, CLLocationManagerDelegate, NSObject>
        {
            AppDelegate *appDelegate;
            IBOutlet MKMapView *userMap;
            CLLocationManager *locationManager;

        }
        @property (strong, nonatomic) IBOutlet UILabel *speedView;
        @property(nonatomic) int speedCount;
    @property (nonatomic,retain) CLLocationManager *locationManager;
    @property (nonatomic, strong) WEPopoverController *popoverController;

    + (NSString *) speedToMPH: (float) value;


    - (IBAction)btnMenuTapped:(id)sender;

    - (IBAction)btnMenuTapped:(id)sender
    {
        if (self.popoverController)
        {
              [self.popoverController dismissPopoverAnimated:YES];
              self.popoverController = nil;
         }
        else
        {
              MainMenuViewController *contentViewController = [[MainMenuViewController alloc] initWithNibName:@"MainMenuViewController" bundle:nil];
              contentViewController.delegate = self;

              self.popoverController = [[WEPopoverController alloc] initWithContentViewController:contentViewController];

            self.popoverController.delegate = self;
            self.popoverController.popoverContentSize = contentViewController.view.frame.size;

              [self.popoverController presentPopoverFromRect:[sender frame]
                                                                inView:self.view
                                         permittedArrowDirections:UIPopoverArrowDirectionDown
                                                             animated:YES];

         }
    }

    #pragma mark - WEPopover Controller Delegate

- (BOOL)popoverControllerShouldDismissPopover:(WEPopoverController *)popoverController
{
      // self.popoverController = nil;
    return YES;
}

-(void)popoverControllerDidDismissPopover:(WEPopoverController *)popoverController
{
    self.popoverController = nil;
}

#pragma mark - Mainmenu Delegate

-(void)tappedButtonTag:(NSInteger)pintButtonTag
{
    [self.popoverController dismissPopoverAnimated:YES];
    self.popoverController = nil;

    if (pintButtonTag==2)
    {
        TravelLogViewController *objTravelLogViewController = [[TravelLogViewController alloc] initWithNibName:@"TravelLogViewController" bundle:nil];
        [self.navigationController pushViewController:objTravelLogViewController animated:YES];
        [objTravelLogViewController release];
    }
    else if(pintButtonTag == 3)
    {
        HelpFromOtherUsersViewController *objHelpFromOtherUsersViewController = [[HelpFromOtherUsersViewController alloc] initWithNibName:@"HelpFromOtherUsersViewController" bundle:nil];
        [self.navigationController pushViewController:objHelpFromOtherUsersViewController animated:YES];
        [objHelpFromOtherUsersViewController release];
    }
    else if (pintButtonTag==4)
    {
        UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"GasIt Community" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Traffic Report",@"Get Assistance",@"Question List", nil];
        actionSheet.tag = 1;
        actionSheet.delegate = self;
        actionSheet.actionSheetStyle =  UIActionSheetStyleBlackTranslucent;
        [actionSheet showInView:self.view];
    }
    else if(pintButtonTag == 5)
    {
        UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Car" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Car Problems",@"Report Car Problem",@"Parking Notification", nil];
        actionSheet.tag = 2;
        actionSheet.delegate = self;
        actionSheet.actionSheetStyle =  UIActionSheetStyleBlackTranslucent;
        [actionSheet showInView:self.view];
    }
    else if(pintButtonTag == 6)
    {
        LostUserListViewController *objLostUserListViewController = [[LostUserListViewController alloc] initWithNibName:@"LostUserListViewController" bundle:nil];
        [self.navigationController pushViewController:objLostUserListViewController animated:YES];
        [objLostUserListViewController release];
    }
    else if(pintButtonTag == 7)
    {
        WeatherViewController *objWeatherViewController = [[WeatherViewController alloc] initWithNibName:@"WeatherViewController" bundle:nil];
        [self.navigationController pushViewController:objWeatherViewController animated:YES];
        [objWeatherViewController release];
    }
    else if(pintButtonTag == 8)
    {
        UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Miscellaneous" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Milage Calculator",@"Advertisements",@"Lottery", nil];
        actionSheet.tag = 3;
        actionSheet.delegate = self;
        actionSheet.actionSheetStyle =  UIActionSheetStyleBlackTranslucent;
        [actionSheet showInView:self.view];
        /*
         MilageTrackerViewController *objMilageTrackerViewController = [[MilageTrackerViewController alloc] initWithNibName:@"MilageTrackerViewController" bundle:nil];
         [self.navigationController pushViewController:objMilageTrackerViewController animated:YES];
         [objMilageTrackerViewController release];
         */
    }
    else if(pintButtonTag == 9)
    {
        MusicListViewController *objMusicListViewController = [[MusicListViewController alloc] initWithNibName:@"MusicListViewController" bundle:nil];
        [self.navigationController pushViewController:objMusicListViewController animated:YES];
        [objMusicListViewController  release];
    }
    else if(pintButtonTag == 10)
    {
        NewsViewController *objNewsViewController = [[NewsViewController alloc] initWithNibName:@"NewsViewController" bundle:nil];
        [self.navigationController pushViewController:objNewsViewController animated:YES];
        [objNewsViewController  release];
    }