Followed steps to download IDE 3.5 and got the following error:

Cannot complete the install because one or more required items could not be found.
  Software being installed: Force.com IDE 19.0.0.201006111421 (com.salesforce.ide.feature.feature.group 19.0.0.201006111421)
  Missing requirement: Force.com IDE Core 19.0.0.201006111421 (com.salesforce.ide.core 19.0.0.201006111421) requires 'bundle org.eclipse.core.resources [3.3.0,3.6.0)' but it could not be found
  Cannot satisfy dependency:
    From: Force.com IDE 19.0.0.201006111421 (com.salesforce.ide.feature.feature.group 19.0.0.201006111421)
    To: com.salesforce.ide.core [19.0.0,20.0.0)