Removing a SKNode content and recreating it cause EXC_BAD_ACCESS - objective-c

Question

'Cause of the difficulties I found combining UITableView and SpriteKit Framework I decided to develop a custom SKTableView (provided with full scrolling system). Everything works really fine but I have serious problem understanding an error I get during the update process.
My SKTableView shows the user a list of items in alphabetical order. Due to the tricky algorithm I should have create in order to update this list (add a cell in a defined position, refresh the headers and scroll down all of the items), I decided to simply update the database and reload the list (by removing existing content and recreate it) while showing asynchrony a notification to the user.
What is happen is the application to success reload the list once, once again, then after some random updates ... here comes the chaos
Issues
The application crashes giving me EXC_BAD_ACCESS during the removeAllChildren methods.
The application crashes with the same error during a for statement (???) or during other statements
The application crashes giving me jet_context::set_fragment_texture... error.
Debug:
The console window doesn't show any kind of information.
I can't monitoring the application using 'Allocation' or 'Zombies' instruments because it critically slow down the application. It takes more than 2 minutes to even load the SKTableView during the init method.
Code
Interface
/** Container for all the table items. */
#property (nonatomic, readonly) SKNode *nodeContainer;
Initialization
- (instancetype)init
{
if (self = [super init]) {
...
Create the style of the SKNode
...
// Container initialization
_nodeContainer = [[SKNode alloc] init];
_nodeContainer.position = CGPointZero;
_nodeContainer.zPosition = 0;
[self addChild:_nodeContainer];
// Generate the content
[self generateContent];
}
return self;
}
Populate the table
- (void)generateContent
{
// Checks if the node exists, if it does, remove all of its children
// Note: used for the recreation of the list
if (_nodeContainer != nil)
[_nodeContainer removeAllChildren];
...
Initializes several SKSpriteNode and SKLabelNode
...
[_nodeContainer addChild:imgItem];
[_nodeContainer addChild:labelItem];
}
Reload the content
...
Update the database
...
[self showProgressNotification];
// Reload the content showing a notification
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0), ^{
// Reload the content
[self generateContent];
dispatch_async(dispatch_get_main_queue(), ^{
[self hideProgressNotification];
});
});
I really cannot figure it out what's happening. The code crashes overtime in a different line without a logic. I mean, is this the right way to remove and recreate items? Any advise?