http://blog.csdn.net/defonds/article/details/26340561
Eclipse 忽然报 "The builder launch configuration could not be found" 错误:
解决办法如下:
1. Package Explorer 视图下选中项目名
2. Eclipse 工具栏中选择 Project -> Properties
3. 弹出的 Properties 对话框中,点击 Builders
4. 将缺失的 builder 移除掉 -> 点击 OK 按钮
原文链接:http://stackoverflow.com/questions/12836941/the-builder-launch-configuration-could-not-be-found。