当我尝试添加或打开包含.edmx文件的项目时，Visual Studio 2008 SP1关闭

I have a problem adding ADO.Net Entity Data Model to my existing project, or even while opening a project which contains *.edmx files.(In my case ) Visual Studio closes automatically. I see the following error in the event log every time this happens Googled the specific error but drew a blank.I have a problem adding ADO.Net Entity Data Mod