Exception thrown while adding a new Liferay Portlet

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.0
• Fix Version/s: None
• Component/s: Wizards, Wizards > Portlet
• Labels: None
• Environment: Eclipse Helios + Liferay IDE + Liferay 6.0.4 (bundle with tomcat) + Liferay-plugins-sdk 6.0.4

I created a new Liferay plugin -> Portlet to make a simple hello world portlet.
That was ok, it was well deployed and i managed to add it in my application.

Then I created a new Liferay portlet (as it was explained in a tutorial video in the wiki) with the plugin I created before. (I tried to make my portlet extend MVCPortlet class and LiferayPortlet class to see if my errors where caused by this but it seemed not to)
It was well deployed since the portlet appeared in the "sample" applications as it was supposed to be.

But, here is the problem : when i tried to add this portlet, my server went crazy printing some javax.servlet.ServletException in a infinite loop.

I followed the video tutorial (where there is no problem) but i'm not the only one to experience this, see comments on : http://www.liferay.com/community/wiki/-/wiki/Main/Liferay%20IDE%20Developing%20Liferay%20Portlets

Did we do something wrong installing or configuring Liferay IDE or is this a bug?