To reproduce:

• Get Eclipse with m2eclipse (or JBoss Tools)
• Download latest Final optaplanner distribution release from optaplanner.org
• Open the examples/sources/pom.xml in eclipse
• Notice how the red icon in the package explorer. It refers to the error in the error window that talks about troubles with the maven-checkstyle-plugin

This is very confusing for new users as they try to fix that error (even though it's ignorable). If something else is wrong, they are trying to fix the wrong thing, and eventually give up and abandon our project!

Task:

• Fix the maven-checkstyle-plugin in kie-parent-metadata (or even in it's parent). If it comes from the jboss parent or another parent, see if just upgrading that parent solves the problem.