devLady 0 Newbie Poster

Hi, Good day to all!
I have a problem regarding ASP.NET MVC 2. Everytime I created/added Models the Visual Studio 2008 crushes down. I right click the models folder then add new item then selected the "ADO.NET Entity Data Model" i created the name of the model "sample.edmx" then i clicked "Add button" and then followed the steps of Entity Data Model Wizard and when I clicked finished it loads the newly created model and then the vs 2008 crushed down and closed my visual studio.
Please help me....