JBoss Tools (nightly) Prevents any Eclipse Plug-in Update

After installing the nightly JBoss Tools nightly build on Eclipse 3.3 stable, updates are prevented due to the following error:

org.jboss.ide.eclipse.ejb3.feature (1.0.0.200706290355-nightly) requires plug-in "org.eclipse.wst.server.core".

It should be noted I'm referring to JBoss Tools nightly build installed by unpacking the zip file downloaded from http://download.jboss.org/jbosstools/builds/nightly/200706290355-nightly/all/JBossTools-200706290355-nightly-ALL-linux-gtk.zip. This is not to be confused with the JBossIDE Beta 2.

The problem can be demonstrated by attempting to install subclipse (for example). The steps to recreate the problem are:

1. Install a fresh Eclipse 3.3.
2. Unzip JBossTools-200706290355-nightly-ALL-linux-gtk to the Eclipse 3.3 directory
3. In Eclipse: Help | Software Updates | Find and Install | Search for new features to install
4. Add a new remote site. In my case I added Subclipse with the update URL of http://subclipse.tigris.org/update_1.2.x
5. Select a feature to install, in my case Subclipse | Subclipse Plugin
6. The error is displayed at the top of the Updates window: org.jboss.ide.eclipse.ejb3.feature (1.0.0.200706290355-nightly) requires plug-in "org.eclipse.wst.server.core".