Xcode 4错误：启动可执行文件时出错

当我将我的应用程序上传到我的实际设备（iphone和iPad）时，我遇到了在iOS和Xcode上测试我的应用程序的问题，我想知道是否有人知道这个问题并且可以帮助我：

I ran into problem with testing my app on iOS and Xcode when I am uploading it to my actual devices (iphone and iPad), and I'm wondering if someone knows the issue and can help me out:

通常当我在我的设备上构建我的应用程序时，应用程序将在我的设备上安装并启动。但是当我准备提交我的第一个应用程序时，我正在测试并更改Bundle Identifier，App ID和Development Provisions（因此问题可能与它有关），现在，当我尝试构建我的应用程序时我的设备虽然安装在我的设备上很好，但Xcode将不再启动应用程序。相反，我收到此错误消息：

Normally when I build my app on my devices, the app is installed and launched on my devices. But as I am preparing for submitting my first app I was testing around and changing the Bundle Identifier, App ID, and Development Provisions (so the issue may have something to do with it), and now, when I try to build my app on my devices, although it's installed on my devices fine, Xcode will not launch the app anymore. Instead, I got this error message:

启动可执行文件时出错。
启动远程程序时出错：没有这样的文件
或目录。

Error Starting Executable. Error launching remote program: No such file or directory.

有谁知道这是什么问题？这个派生数据文件夹是关于什么的？

Does anyone know what the issue is? And What is this derived data folder about?

非常感谢！