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以下錯誤發生在我嘗試安裝插件到eclipse時發生。我從來沒有已經安裝到eclipse，這是我的Eclipse赫利俄斯的全新副本phoneGap + Eclipse PLugin安裝問題
請幫我理清這個問題
"JavaScript Development Tools" is already installed, so an update will be performed instead.
Cannot complete the install because of a conflicting dependency.
Software being installed: JavaScript Development Tools 1.2.4.v201207042009 (org.eclipse.wst.jsdt.feature.feature.group 1.2.4.v201207042009)
Software currently installed: Eclipse IDE for Java EE Developers 1.3.2.20110218-0812 (epp.package.jee 1.3.2.20110218-0812)
Only one of the following can be installed at once:
JavaScript Debug Core 1.0.1.v201008170101 (org.eclipse.wst.jsdt.debug.core