ddt 0.4rc1 Installation error

[dolive]

Cannot complete the install because one or more required items could not be found.

    Software being installed: DDT - D Development Tools RC1 0.4.0.201010271500-RC1 (org.dsource.ddt.feature.group 0.4.0.201010271500-RC1) Missing requirement: DDT - D Development Tools RC1 0.4.0.201010271500-RC1 (org.dsource.ddt.feature.group 0.4.0.201010271500-RC1) requires 'org.eclipse.dltk.core.feature.group [2.0.0,2.1.0)' but it could not be found 

I was try eclipse3.6, eclipse3.6.1, eclipse3.6.1-1020