Maven error :"Updating Maven Project"

Question

I have installed Eclipse 32 bits EE with Maven and Spring but when I create new project with Maven, I keep getting the following error message :

An internal error occurred during: "Updating Maven Project".
loader constraint violation: loader 
(instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) 
previously initiated loading for a different type with name 
"org/apache/maven/project/MavenProject"

Thank you for your help

Answer 1

It seems to be a known problem in some version combinations of Spring-Eclipse integration.

Upgrade or downgrade.