I am building a simple app with a custom bar tab which loads the content of the ViewController from a UITableView located in another ViewController.

However, every time I try to scroll on the tableview, I get an exc_bad_access error. I enabled NSzombies and guard malloc to get more info on the issue.

In the console I get:

"message sent to deallocated instance 0x19182f20" 

and after profiling I get:

#   Address             Category                    Event Type  RefCt     Timestamp Size    Responsible Library   Responsible Caller
56  0x19182f20          FirstTabBarViewController   Zombie      -1        00:16.613.309 0   UIKit                 -[UIScrollView(UIScrollViewInternal) _scrollViewWillBeginDragging]

Here is a bit of the code of the ViewController in which the error occurs: .h file:

#import <UIKit/UIKit.h>
#import "DataController.h"

@interface FirstTabBarViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>  {
    IBOutlet UITableView* tabBarTable;
}

@property (strong, nonatomic) IBOutlet UIView *mainView;
@property (strong, nonatomic) IBOutlet UITableView *tabBarTable;
@property (nonatomic, strong) DataController *messageDataController;

@end

.m file:

#import "FirstTabBarViewController.h"
#import "DataController.h"

@interface FirstTabBarViewController ()

@end

@implementation FirstTabBarViewController
@synthesize tabBarTable=_tabBarTable;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)awakeFromNib
{
    [super awakeFromNib];
    self.messageDataController=[[DataController alloc] init];
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return [self.messageDataController countOfList];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"mainCell";
    UITableViewCell *cell = [tableView
                             dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil){
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    };

    NSString *expenseAtIndex = [self.messageDataController
                                   objectInListAtIndex:indexPath.row];
    [[cell textLabel] setText:expenseAtIndex];
    return cell;
}


- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Return NO if you do not want the specified item to be editable.
    return NO;
}

@end

This FirstTabBarViewController is loaded in the MainViewController with the following custom segue:

#import "customTabBarSegue.h"
#import "MainViewController.h"

@implementation customTabBarSegue

-(void) perform {
    MainViewController *src= (MainViewController *) [self sourceViewController];
    UIViewController *dst=(UIViewController *)[self destinationViewController];

    for (UIView *view in src.placeholderView.subviews){
        [view removeFromSuperview];
    }

    src.currentViewController =dst;
    [src.placeholderView addSubview:dst.view];



}
@end

The Datacontroller class is just a simple NSMutableArray containing strings.

I am using ARC so I don't understand where the memory management error comes from. Does anybody have a clue?

Any help much appreciated ;) Thanks!!