When I want to add a ESB library to the buildpath of a ESB project (right-click on project -> Properties... -> Java Build Path -> Add Library... -> Jboss ESB library ), nothing happens after clicking on the "Next" button.

When switching to the PDE development perspective, I see a lot of errors, some of them beeing related to JBossESB tools.

I must precise that the ESB libraries are correctly added to the project's build path when I create a new ESB project. But if I want to change the ESB library, or add a dependency to an ESB library to any project (including non-ESB projects), I got systematically this exception.

Please see the log in attachment for the full Eclipse log. I captured it right after the exception (got the problem, switched to the PDE perspective and exported the log).