Errors occurred during the build.
Errors running builder ‘Integrated External Tool Builder‘ on project ‘xinghe-base‘.
The builder launch configuration could not be found.
The builder launch configuration could not be found.
Errors running builder ‘Integrated External Tool Builder‘ on project ‘xinghe-base-web‘.
The builder launch configuration could not be found.
The builder launch configuration could not be found.
Errors running builder ‘Integrated External Tool Builder‘ on project ‘xinghe-base-web‘.
The builder launch configuration could not be found.
The builder launch configuration could not be found.
Errors running builder ‘Integrated External Tool Builder‘ on project ‘xinghe-manager-web‘.
The builder launch configuration could not be found.
The builder launch configuration could not be found.
Errors running builder ‘Integrated External Tool Builder‘ on project ‘xinghe-manager-web‘.
The builder launch configuration could not be found.
The builder launch configuration could not be found.
错误环境描述：
操作系统：Windows 7 x64
Eclipse：
Eclipse Java EE IDE for Web Developers.
Version: Luna Service Release 2 (4.4.2)
Build id: 20150219-0600
apachetomcat 8.022
JDK 1.8
apachemaven 3.3.3
为了加快项目的编译速度，取消了一些验证和Builder，导致此错误
错误如下图：
解决方法：
在出错的项目上点击鼠标右键，弹出的菜单中选择属性：
在左侧选择“Builders”，在右侧删除不可用的Builder；
Errors occurred during the build. Errors running builder 'Integrated External Tool Builder' on proje
原文：http://blog.csdn.net/testcs_dn/article/details/50504410
