eclipse4.3安装e(fx)clipse出错

当我安装e(fx)clipse的时候，安装的时候出现了下面的错误：
Cannot complete the install because one or more required items could not be found. Software being installed: e(fx)clipse - IDE - Kepler 0.9.0.201401250805 (org.eclipse.fx.ide.all.kepler.feature.feature.group 0.9.0.201401250805)

Missing requirement: e(fx)clipse - IDE - FXGraph 0.9.0.201401250805 (org.eclipse.fx.ide.fxgraph.feature.feature.group 0.9.0.201401250805) requires 'org.eclipse.xtext.sdk.feature.group 2.5.0' but it could not be found

google了一下，解决办法就是安装xtext，或者升级xtext到最新版本：

安装xtext的地址：http://download.eclipse.org/modeling/tmf/xtext/updates/composite/releases/