If you've just finished installing Metasploit, the application will now take up to 5 minutes to initialize. It's normal - please be patient and have a coffee...
If you have already been using the product, this message may point to a bug in the application and require the Metasploit services to be restarted to resume functionality.
If the problem persists, you may want to consult the following resources:
Retrying your request in 5 seconds...