Any news? I'm experiencing the same issue...
Hello, have you resolved it yet? ... I have the same issue .-(
Perhaps I've found the solution(s) but I don't know which one of them is the right:
if you are using maven, try this one: Add Exclusions tag with all exclusions.
The second one solution maybe is to change version of RF to 4.1.0.CR2.
In both cases don't forget to clean your project.