防止iCloud窗口在OSX 10.8应用程序启动时打开

我写了一个使用iCloud文档存储的OSX应用程序。每当我在Mountain Lion（而不是Lion）上打开它时，iCloud窗口会打开，如下所示：

I have written an OSX app that uses iCloud document storage. Whenever I open it in Mountain Lion (not on Lion), an iCloud window opens that looks like the following:

有没有办法防止这种情况发生？

Is there a way to prevent this from happening on launch?

更新：

1） applicationShouldOpenUntitledFile：没有被调用（是的，我确定我在我的代理监听。

2）如果我强制退出应用程序，下次打开时，我没有得到对话框。但是，如果我通过正常的退出过程，它会出现。

1) applicationShouldOpenUntitledFile: is not getting called (yes, I'm sure I'm listening in my delegate.
2) If I force quit the app, the next time it opens, I don't get the dialog. But, if I go through the normal Quit process, it does appear.

更新2（也添加为答案，帮助可能绊倒这个问题）：
来自重复问题的 applicationShouldOpenUntitledFile：无法正常工作。经过大量的实验，我想出如果我从 CFBundleDocumentTypes 中删除 NSDocumentClass 键和值从我的Info.plist > array，窗口不再打开。

Update 2 (also added as an answer, to help people that may stumble across this question in the future): The applicationShouldOpenUntitledFile: from the duplicate question was not working. After lots of experimentation, I figured out that if I remove the NSDocumentClass key and value from my Info.plist in the CFBundleDocumentTypes array, the window is no longer opened. I've added that answer to the duplicate question as well.