currently getting the following error message when trying to install the force.com IDE plugin:

Cannot complete the install because one or more required items could not be found.
  Software being installed: Force.com IDE 27.0.0.201302151147 (com.salesforce.ide.feature.feature.group 27.0.0.201302151147)
  Missing requirement: Force.com IDE 27.0.0.201302151147 (com.salesforce.ide.feature.feature.group 27.0.0.201302151147) requires 'org.eclipse.update.ui 0.0.0' but it could not be found

Please can anyone help.

currently getting the following error message when trying to install the force.com IDE plugin:

Cannot complete the install because one or more required items could not be found.
  Software being installed: Force.com IDE 27.0.0.201302151147 (com.salesforce.ide.feature.feature.group 27.0.0.201302151147)
  Missing requirement: Force.com IDE 27.0.0.201302151147 (com.salesforce.ide.feature.feature.group 27.0.0.201302151147) requires 'org.eclipse.update.ui 0.0.0' but it could not be found

Please can anyone help.

I'm getting the attached error when attempting to install the latest Force.com IDE plugin on the latest Eclipse version with the latest JDK installed.  The error comes up after I click next on the "Available Software" selection screen of the "Install New Software" dialog.  How can I fix this problem?  Thank you!

Cannot complete the install because of a conflicting dependency.
  Software being installed: Force.com IDE 20.0.1.201011121559 (com.salesforce.ide.feature.feature.group 20.0.1.201011121559)
  Software currently installed: Shared profile 1.0.0.1284708747720 (SharedProfile_epp.package.java 1.0.0.1284708747720)
  Only one of the following can be installed at once: 
    Structured Source Editor 1.2.2.v201008232126 (org.eclipse.wst.sse.ui 1.2.2.v201008232126)
    Structured Source Editor 1.1.102.v200910200227 (org.eclipse.wst.sse.ui 1.1.102.v200910200227)
  Cannot satisfy dependency:
    From: Shared profile 1.0.0.1284708747720 (SharedProfile_epp.package.java 1.0.0.1284708747720)
    To: org.eclipse.wst.sse.ui [1.2.2.v201008232126]
  Cannot satisfy dependency:
    From: Force.com IDE 20.0.1.201011121559 (com.salesforce.ide.feature.feature.group 20.0.1.201011121559)
    To: org.eclipse.wst.html.ui [1.0.0,2.0.0)
  Cannot satisfy dependency:
    From: HTML UI Source Editor 1.0.401.v200908111935 (org.eclipse.wst.html.ui 1.0.401.v200908111935)
    To: bundle org.eclipse.wst.sse.ui [1.1.0,1.2.0)