MyEclipse总是弹出“Building workspace has encountered a problem. Errors during build.

MyEclipse总是弹出“Building workspace has encountered a problem. Errors during build.
MyEclipse总是弹出“Building workspace has encountered a problem. Errors during build.”的窗口。工作区我的确是选择了工程所在的路径啊，为什么还是会出现这样的提示？

[解决办法]
workspace曾经装了2个？
[解决办法]
打开Myeclipse之后，先不要急着操作，等build workspace完成了，再做你想做的事，就不会出现你说的这种情况了。
[解决办法]
重新构建一下.metadata