Try to clean your local repository(remove all RF related files) and try to build with mvn again. It sometimes heppens with maven that it uses old copies of files.
I removed everything but the pom file and get the same error. I'm concerened with the error "parent.relative.Path points at wronglocal POM" is an issue
line 7 col 13.
In my distribution there is no "parent" directory that is peer to the "example" directory let alone ../parent/pom.xml. I downloaded it again but see the same thing in the zip.