Make sure the Server Name or IP, port, and catalog fields are empty. If accessing local data they should not have a value because you don't need to connect to the server. Then make sure you define the path to the Data Dictionary on the first tab.
If you still have issues you can reply to this post with your connection string (found on the debug tab). That may help us understand the issue. Just make sure to strip out and usernames and passwords.
Please try to avoid creating multiple posts for the same topic. I will delete the other posts to avoid confusion.