m2eclipse error

Question

I am developing a web application with Eclipse and I generate the project with a maven archetype.

When I enable maven dependency management, Eclipse mark some errors

Answer 1

I had a similar case for the default groovy compiler plugin

The solution was to install ME2 provided by Springsource according to this answer

Plugin execution not covered by lifecycle configuration maven error

This immediately solved the "Plugin execution not covered by lifecycle configuration" problem in Eclispe Juno.