Normally, the window that opens is the About Database document - which appears to not have been filled in.
If that is indeed the problem, you can either fill in that document with a short description of the functionality of the database, or check the database properties to see what the launch properties are.
To do so, open the DB Properties and go to the third tab from the right (between the magnifying glass and the hammer/ruler tabs). On that tab, you have the default launch rule, and the About doc showing rules.
If neither of the About db doc options are checked and the launch rule seems OK, then we will have to start looking somewhere else.
Pascal.