Xcode error - Thread 1: signal SIGABRT [closed]
SIGABRT means in general that there is an uncaught exception. There should be more information on the console.
You are trying to load a XIB named DetailViewController, but no such XIB exists or it's not member of your current target.
SIGABRT is, as stated in other answers, a general uncaught exception. You should definitely learn a little bit more about Objective-C. The problem is probably in your UITableViewDelegate method didSelectRowAtIndexPath.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPathI can't tell you much more until you show us something of the code where you handle the table data source and delegate methods.