Attempting to install the "SOA abridged" plugins from:

http://www.qa.jboss.com/binaries/RHDS/builds/staging/devstudio-5.0_trunk.soa-tooling.updatesite/product-soa/ (nightly - Jan 16 2012)

On top of the Jan 16 build:

Version: 5.0.0.Beta1
Build id: v20120114-1832-H1633-Beta1
Build date: 20120114-1832

Results in these errors:

Your original request has been modified.
"Runtime Initialization" is already installed, so an update will be performed instead.
"JBoss Runtime Detection Core" is already installed, so an update will be performed instead.
Cannot complete the install because of a conflicting dependency.
Software being installed: Runtime Initialization 1.3.0.v20120116-1513-H527-Beta1 (org.jboss.tools.runtime.feature.feature.group 1.3.0.v20120116-1513-H527-Beta1)
Software currently installed: JBoss Developer Studio 5.0.0.201201141342 (com.jboss.jbds.all 5.0.0.201201141342)
Only one of the following can be installed at once:
JBoss Runtime Initializer 1.3.0.v20120114-1741-H525-Beta1 (org.jboss.tools.runtime 1.3.0.v20120114-1741-H525-Beta1)
JBoss Runtime Initializer 1.3.0.v20120116-1513-H527-Beta1 (org.jboss.tools.runtime 1.3.0.v20120116-1513-H527-Beta1)
Cannot satisfy dependency:
From: JBoss Developer Studio 5.0.0.201201141342 (com.jboss.jbds.all 5.0.0.201201141342)
To: org.jboss.tools.runtime.feature.feature.group [1.3.0.v20120114-1741-H525-Beta1]
Cannot satisfy dependency:
From: Runtime Initialization 1.3.0.v20120114-1741-H525-Beta1 (org.jboss.tools.runtime.feature.feature.group 1.3.0.v20120114-1741-H525-Beta1)
To: org.jboss.tools.runtime [1.3.0.v20120114-1741-H525-Beta1]
Cannot satisfy dependency:
From: Runtime Initialization 1.3.0.v20120116-1513-H527-Beta1 (org.jboss.tools.runtime.feature.feature.group 1.3.0.v20120116-1513-H527-Beta1)
To: org.jboss.tools.runtime [1.3.0.v20120116-1513-H527-Beta1]