Errors on importing GateIn Portal as Maven project

When trying to import "GateIn Portal" as an "Existing Maven Project" in JBoss Developer Studio Beta with EAP, I see an error dialog with two messages:

• "JBoss Core Portlet 2.0 requires Java 1.5 or newer"
• "JBoss Core Portlet 2.0 requires Dynamic Web Module 2.5 or newer"

Steps to reproduce:

• Install JBoss Developer Studio with EAP
• Import "Existing Maven Project", selecting the root of the GateIn clone (ex: https://github.com/jpkrohling/gatein-portal)