Error in Visual Editor for java with eclipse

hello eb
till i ysterday i used visual editor for java with eclipse normally without any problem but to day when i opened eclipse it display me this error :
Error trying to set new File into editor
Motif : java.lang.NullPointerException
and i think that the problem comes from the visual editor plugin because when i add a new frame or even for the old frame it dosent display for me the graphical component like every time
if si has the solution or can advise me thank you alot and i really dont know what to do .
it is for my stydy project and i have to finish xorking as fast as possible so if so can help me

well this forum here is the official java-forum by Sun.
you are asking for help on Eclipse, a software made by IBM since the cooperation between the two werent that bright all the time.(hence the name eclipse)
i just looked a few hours myself, and the latest version of the VE was suited for 3.0.2, the version fitting to the latest 3.1 build of eclipse, was still just a release candidate.
wait a few days/weeks for a final build and retry.

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