Unable to install JBDS from update site

When trying to update from JBDS 4.0.0.Beta1 to JBDS 4.0.0.Beta2 I'm getting this error:

Cannot complete the install because one or more required items could not be found.
Software being installed: Spring IDE Integration, Flex and Web Services Extension (optional) 2.5.1.201011101000-RELEASE (org.springframework.ide.eclipse.integration.feature.feature.group 2.5.1.201011101000-RELEASE)
Missing requirement: Spring Integration Security Support 2.0.0.M4 (org.springframework.integration.security 2.0.0.M4) requires 'package org.springframework.security [2.0.5.RELEASE,4.0.0)' but it could not be found
Cannot satisfy dependency:
From: Spring IDE Integration, Flex and Web Services Extension (optional) 2.5.1.201011101000-RELEASE (org.springframework.ide.eclipse.integration.feature.feature.group 2.5.1.201011101000-RELEASE)
To: org.springframework.integration.security [2.0.0.M4]

JBDS update site: http://reports.qa.atl.jboss.com/binaries/RHDS/builds/staging/devstudio-4.0_stable_branch.updatesite/all/repo/
Spring IDE update site: http://reports.qa.atl.jboss.com/binaries/RHDS/builds/staging/devstudio-4.0_stable_branch.updatesite/extras/