SoapUI nature not present in Eclipse 3.5.2 (OEPE)

Hi,

I installed soapUI 3.5 plugin to Eclipse (actually manually dropped 2 jars in features&plugins folders). Now I can use soapUI perspective, but soapUI nature is not available in menu, on different views - navigator, package explorer etc. In Helios everything is fine.
How can I fix this and is there any fix at all?

Thanks.