ios – 这个类不是键XXXXXX的键值编码

reason: '[<LoadingViewController 0x6b2c5a0> SETVALue:forUndefinedKey:]: this class is not key value coding-compliant for the key aproposViewController.'

奇怪的是aproposViewController不在LoadViewController中使用,它只是我应用程序中的另一个视图控制器.请帮忙,thx提前:)

编辑

appdelegate.h：

@class LoadingViewController;

@interface TopStationAppDelegate : NSObject <UIApplicationDelegate,CLLOCATIOnManagerDelegate> {
    UIWindow *window;
    LoadingViewController *loadingView;
}
@property (nonatomic,retain) IBOutlet UIWindow *window;
@property (nonatomic,retain) IBOutlet LoadingViewController *loadingView;
@end

appdelegate.m：

#import "LoadingViewController.h"
@implementation TopStationAppDelegate
@synthesize window;
@synthesize loadingView;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    
  [window addSubview:loadingView.view];
    [window makeKeyAndVisible];
    return YES;
}
- (void)dealloc {
    [loadingView release];
    [window release];
    [super dealloc];
}
@end

没有aproposViwController的声明,即使在IB的主视图！
编辑2
这里有两个屏幕截图我的主要和在viewView中的界面构建器：