some IDE errors in my March Orcas CTP

There are a few errors in my March Orcas CTP:
1.can't open server explorer wizzard
2.can't open the designer file of LINQ(*.dbml).

Please give me some clue about the problem.

[192 byte] By [Miracleshsq] at [2008-1-6]

Visual Studio Orcas

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