这似乎是在最新的错误（如2014年3月13日）的ADT捆绑发布。通过Eclipse的一个更新的安装新软件的窗口应该修复它。要做到这一点，你可以尝试以下方法：

This seems to be a bug in the latest (as of Mar 13, 2014) ADT bundle release. An update through Eclipse's Install New Software window should fix it. To do this, you can try the following:

1. 在Eclipse中，转到帮助 - >安装新的软件;


2. 选择具有URL主要更新站点 http://dl-ssl.google.com/android/eclipse ;


3. 在底部的禁用联系所有更新站点，在安装过程中找到需要的软件;此更新时，导致的问题;


4. 检查开发者工具;


5. 执行更新的休息;

1. In Eclipse, go to Help -> Install new software;
2. Pick main update site having the URL http://dl-ssl.google.com/android/eclipse;
3. In the bottom section disable "Contact all update sites during install to find required software"; this causes issues when updating;
4. Check Developer Tools;
5. Perform the rest of the update;