Unable to install in Luna

I am trying to install the present Directory Studio release into the current Eclipse Version: Luna Service Release 1 (4.4.1) Build id: 20140925-1800 using the instructions at http://directory.apache.org/studio/installation-in-eclipse.html and am getting this error during the installation.

eclipse.buildId=4.4.1.M20140925-0400
java.version=1.8.0_20
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments: -product org.eclipse.epp.package.java.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.java.product

org.eclipse.equinox.p2.director
Error
Mon Nov 17 20:18:12 EST 2014
Missing requirement: Eclipse Web Developer Tools 3.6.1.v201409112028 (org.eclipse.wst.web_ui.feature.feature.group 3.6.1.v201409112028) requires 'org.eclipse.wst.jsdt.web.core [1.0.700.v201307151913]' but it could not be found

Any ideas on