I just archived and submitted a project. When I go back to open the project it hangs on "scanning for working copies." I can navigate around but am unable to view the project files.

It is really just a linking problem. Select your project and make sure you have 'Identity and Type' open. This is in the right side Editor bar(toggle open and closed with 'View' button). You can change your Location and Full Path there. You just need to check that your project is linked to the correct directories. Hope this helps anyone.