xcode - 从 xcode 4.3.2 升级到 4.5.2 时出现错误

Question

我有 Mac OS X v10.7.5 Lion。我正在尝试安装 Ruby 1.9.3。在做的过程中，我刚刚下载了xcode 4.5.2来替换4.3.2。但是当我这样做时，我收到以下错误。我该如何解决这个问题？

提前致谢。

The operation can’t be completed because some items had to be skipped. For each item, 
choose File > Get Info, make sure “Locked” is deselected, and then check the Sharing & 
Permissions section. When you are sure the items are unlocked and not designated as 
Read Only or No Access, try again.

Answer 1

我发现我首先需要删除旧的并在应用程序中放置新的。