Please try the answers on this thread:
https://github.com/dhanji/sitebricks/issues/51
What's happening is that your project is not configured properly with its own pom.xml, so you are missing a transitive dependency of Guice (aopalliance.jar) which is not defined anywhere explicitly (but which maven knows how to set up).
Im not sure how you generated the Eclipse project, but there is a flaw in that part of the puzzle =)
Dhanji (creator of sitebricks)