如果我尝试使用预定义的单元测试配置在eclipse中运行单元测试，我会收到以下错误：
Errors occurred during the build.
Errors running builder 'Java Builder' on project 'atf'.
org.eclipse.core.internal.resources.Project cannot be cast to
org.eclipse.core.resources.IFolder
我正在运行Eclipse Luna Service Release 1（4.4.1），我只看到了这个Eclipse版本的问题，旧版本很好......