After stopping and starting the app about 3 times, some dialog box came up asking me to accept some default directory, which I did, and it seems to be up and running. For future reference ...

Hi, I just install 4.0, and am excited to go through some of the introductory tutorials.However, when I click the 'file' menu to open the first sample model, there is no dropdown. My laptop cooling fan is going now and task manager indicates 50.2% of cpu (and about 600M memory) consumed by java and ...