org.eclipse.jdt.internal.core.JavaModel cannot be cast to org.eclipse.jdt.core.IJavaProject

It has been several months since I first posted about this issue and
since then I've been waiting to see if any others might also have this
problem but I don't believe I've seen references at least in the GWT
forum. I have seen at least one reference to this error in Helios on a
webobjects forum but without any solution posted that I could find. My
problem is that I can create a new GWT web project in eclipse Galileo
with no problems. But I continue to get this error message when trying
to create even a basic GWT web project in Helios. I've continued,
since I first installed Helios, to get all updates available for
Helios and for GWT hoping to solve this problem without any luck. Has
anyone else also had this problem and if so found a solution? Or does
anyone have any suggestions that I could try?
Thank You

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