[news.eclipse.tools.cdt] strange CDT/GMF interaction

["Franz Fehringer" <fehrin@xxxxxxxxxxx>]

Hello,

I see a strange CDT/GMF (M6 each) interaction if i install both plugins 
(including their prerequisites) on top of eclipse 3.3M6:
In the properties dialog of the GMF components a new property "C/C++ 
Toolchain edit" shows up.
But between clicking on "Show Properties" and display of the properties 
dialog an error box pops up saying
"An error has occured. See error log for details."
After clicking it away the dialog shows the additional property with a value 
of
"Unknown element selected"
At this point then eclipse itself is in an infinite error loop; the 
properties dialog cannot be closed anymore and i have to kill eclipse via 
the task manager.
In the error log i see
Unhandled event loop exception (org.eclipse.ui)
java.lang.NullPointerException: element not initialized ! 
(org.eclipse.jface)
and several others.
Is this a known problem?

Cheers

Franz