为什么ios 视频播放器播放不了

NSString *path = [[NSBundle mainBundle] pathForResource:@"1" ofType:@"mp4"];
NSURL *url = [NSURL fileURLWithPath:path];
MPMoviePlayerController *mp = [[MPMoviePlayerController alloc] initWithContentURL:url];
[mp.view setFrame:CGRectMake(0, 0, 320, 200)];
[mp.view setBackgroundColor:[UIColor redColor]];
[self.view addSubview:mp.view];
[mp play];

错误原因：`2014-08-04 11:43:48.371 JiaJS01[3183:90b] Cannot find executable for CFBundle 0x10c037500 (not loaded)
2014-08-04 11:43:48.387 JiaJS01[3183:90b] Cannot find executable for CFBundle 0x10c13c4a0 (not loaded)`
在网上搜索的方法还原模拟器不可用，还原过后依然是报这个错误