导出RCP项目报错（ A problem occured while invoking the director）

1、错误信息

'export product' has encountered a problem C:\workSpace\0704\.metadata\.plugins\org.eclipse.pde.core\temp\org.eclipse.pde.container.feature\package.org.eclipse.pde.container.feature.win32.win32.x86_64.xml:90: The following error occurred while executing this line: C:\workSpace\0704\.metadata\.plugins\org.eclipse.pde.core\temp\org.eclipse.pde.container.feature\package.org.eclipse.pde.container.feature.win32.win32.x86_64.xml:740: The following error occurred while executing this line: C:\tool\eclipse-standard-kepler-SR2-win32-x86_64\eclipse\plugins\org.eclipse.pde.build_3.8.100.v20130514-1028\scripts\genericTargets.xml:241: A problem occured while invoking the director. The following error occurred while executing this line: C:\workSpace\0704\.metadata\.plugins\org.eclipse.pde.core\temp\org.eclipse.pde.container.feature\package.org.eclipse.pde.container.feature.win32.win32.x86_64.xml:740: The following error occurred while executing this line: C:\tool\eclipse-standard-kepler-SR2-win32-x86_64\eclipse\plugins\org.eclipse.pde.build_3.8.100.v20130514-1028\scripts\genericTargets.xml:241: A problem occured while invoking the director.

2、解决办法（估计是和eclipse版本有关，我用的版本是eclipse-2019。可能是eclipse内置的Plug-in包是用JAVA1.7编译的）