* thread #1: tid = 0x31d1db, 0x0000000102e5e00b libobjc.A.dylib`objc_msgSend + 11, queue = ‘com.apple.main-thread‘, stop reason = EXC_BAD_ACCESS (code=1, address=0x18)    frame #0: 0x0000000102e5e00b libobjc.A.dylib`objc_msgSend + 11    frame #1: 0x0000000101968212 UIKit`-[UISectionRowData refreshWithSection:tableView:tableViewRowData:] + 2353    frame #2: 0x000000010196de45 UIKit`-[UITableViewRowData rectForFooterInSection:heightCanBeGuessed:] + 320    frame #3: 0x000000010196df3a UIKit`-[UITableViewRowData heightForTable] + 56    frame #4: 0x00000001017c0af0 UIKit`-[UITableView _updateContentSize] + 381    frame #5: 0x00000001017ddecd UIKit`-[UITableView didMoveToWindow] + 65    frame #6: 0x00000001017649a0 UIKit`-[UIView(Internal) _didMoveFromWindow:toWindow:] + 1482    frame #7: 0x0000000101775333 UIKit`-[UIScrollView _didMoveFromWindow:toWindow:] + 55    frame #8: 0x000000010176468e UIKit`-[UIView(Internal) _didMoveFromWindow:toWindow:] + 696    frame #9: 0x000000010176468e UIKit`-[UIView(Internal) _didMoveFromWindow:toWindow:] + 696    frame #10: 0x000000010176468e UIKit`-[UIView(Internal) _didMoveFromWindow:toWindow:] + 696    frame #11: 0x000000010176468e UIKit`-[UIView(Internal) _didMoveFromWindow:toWindow:] + 696    frame #12: 0x000000010175d112 UIKit`__45-[UIView(Hierarchy) _postMovedFromSuperview:]_block_invoke + 125    frame #13: 0x000000010175d086 UIKit`-[UIView(Hierarchy) _postMovedFromSuperview:] + 437    frame #14: 0x0000000101766f4b UIKit`-[UIView(Internal) _addSubview:positioned:relativeTo:] + 1604    frame #15: 0x00000001017c816f UIKit`-[UITableView _addContentSubview:atBack:] + 245    frame #16: 0x00000001017e08cd UIKit`__53-[UITableView _configureCellForDisplay:forIndexPath:]_block_invoke + 2403    frame #17: 0x00000001017615ce UIKit`+[UIView(Animation) performWithoutAnimation:] + 65    frame #18: 0x00000001017dff5b UIKit`-[UITableView _configureCellForDisplay:forIndexPath:] + 312    frame #19: 0x00000001017e74cc UIKit`-[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 533    frame #20: 0x00000001017c6fb1 UIKit`-[UITableView _updateVisibleCellsNow:isRecursive:] + 2846    frame #21: 0x00000001017dce3c UIKit`-[UITableView layoutSubviews] + 213    frame #22: 0x0000000101769973 UIKit`-[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 521    frame #23: 0x00000001043efde8 QuartzCore`-[CALayer layoutSublayers] + 150    frame #24: 0x00000001043e4a0e QuartzCore`CA::Layer::layout_if_needed(CA::Transaction*) + 380    frame #25: 0x00000001043e487e QuartzCore`CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 24    frame #26: 0x000000010435263e QuartzCore`CA::Context::commit_transaction(CA::Transaction*) + 242    frame #27: 0x000000010435374a QuartzCore`CA::Transaction::commit() + 390    frame #28: 0x00000001016ee54d UIKit`-[UIApplication _reportMainSceneUpdateFinished:] + 44    frame #29: 0x00000001016ef238 UIKit`-[UIApplication _runWithMainScene:transitionContext:completion:] + 2642    frame #30: 0x00000001016edbf2 UIKit`-[UIApplication workspaceDidEndTransaction:] + 179    frame #31: 0x000000010480c2a3 FrontBoardServices`__31-[FBSSerialQueue performAsync:]_block_invoke + 16    frame #32: 0x00000001034f253c CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12    frame #33: 0x00000001034e8285 CoreFoundation`__CFRunLoopDoBlocks + 341    frame #34: 0x00000001034e8045 CoreFoundation`__CFRunLoopRun + 2389    frame #35: 0x00000001034e7486 CoreFoundation`CFRunLoopRunSpecific + 470    frame #36: 0x00000001016ed669 UIKit`-[UIApplication _run] + 413    frame #37: 0x00000001016f0420 UIKit`UIApplicationMain + 1282  * frame #38: 0x0000000101513903 NiuHelper`main(argc=1, argv=0x00007fff5e7ac350) + 115 at main.m:14    frame #39: 0x000000010844d145 libdyld.dylib`start + 1

Sorry I never came back to this thread.So the issue is that this nib is being loaded by a view controller through its initWithNibName:bundle: method. That method will not retain any top level objects on its own.So your Highscore Controller object is loaded from the nib and then autoreleased, which means it goes away pretty quickly after that. So you need to retain that object. One easy way to do that is to define a property in your view controller subclass for this object (specifying ‘retain‘ and ‘IBOutlet‘ of course) and then connect that outlet to this Highscore Controller in IB.

- (TopTabPage *)TopTabControl:(TopTabControl *)tabCtrl                  pageAtIndex:(NSUInteger)index{    TopTabPage *page = [[TopTabPage alloc] initWithFrame:CGRectMake(0,                                                                    0,                                                                    CGRectGetWidth(self.view.frame),                                                                    CGRectGetHeight(tabCtrl.bounds) -  30                                                                    )];                NHNewsModel *NewsModel = [self.tagListModel.result.channelList objectAtIndex:index];    NHNewsContentViewController *contentViewVC = [[NHNewsContentViewController alloc] initWithChannelID:NewsModel.getChannelID                                                                                         andContentRect:page.bounds];    [page addSubview:contentViewVC.view];    //    [_array addObject:contentViewVC];    return page;}