title: Error in installing WTP plugin to ADT eclipse
body: <p>I am trying to install WTP plugins but getting error while installing.Can somebody please have a look on it,not able to find its solution</p>
  
  <pre><code>Your original request has been modified.
  "Eclipse XML Editors and Tools" is already present because other installed software      
  requires it.  It will be added to the installed software list.
  Cannot complete the install because one or more required items could not be found.
  Software being installed: Eclipse Java Web Developer Tools 3.3.2.v201112072049-    
  7F7AFO7C25ToiIbpoiuW12GT78Mciy6W7iwuxaco (org.eclipse.jst.web_ui.feature.feature.group   
  3.3.2.v201112072049-7F7AFO7C25ToiIbpoiuW12GT78Mciy6W7iwuxaco)
  Missing requirement: Structured Source JSP Model 1.2.402.v201112071853   
  (org.eclipse.jst.jsp.core 1.2.402.v201112071853) requires 'package 
  javax.servlet.jsp.tagext [2.0.0,2.2.0)' but it could not be found
  Cannot satisfy dependency:
  From: Eclipse Java Web Development Core 3.3.2.v201112072049-  
  7Q7DGLAFE9LeAHGQwz0Yz0Nmuitz01z01sRxi387 (org.eclipse.jst.web_core.feature.feature.group   
  3.3.2.v201112072049-7Q7DGLAFE9LeAHGQwz0Yz0Nmuitz01z01sRxi387)
  To: org.eclipse.jst.jsp.core [1.2.402.v201112071853]
  Cannot satisfy dependency:
  From: Eclipse Java Web Developer Tools 3.3.2.v201112072049-  
  7F7AFO7C25ToiIbpoiuW12GT78Mciy6W7iwuxaco (org.eclipse.jst.web_ui.feature.feature.group  
  3.3.2.v201112072049-7F7AFO7C25ToiIbpoiuW12GT78Mciy6W7iwuxaco)
  To: org.eclipse.jst.web_core.feature.feature.group [3.3.2.v201112072049-
  7Q7DGLAFE9LeAHGQwz0Yz0Nmuitz01z01sRxi387]
  </code></pre>