I'm sorry to hear you're having trouble installing the RocketLauncher. To assist you more effectively, could you please provide more details about your setup?
What is the version of PHP you are using?
Are you installing on a local server or on a live hosting environment?
Could you describe the exact steps you're taking when trying to install the RocketLauncher?
Is there any error message other than "failure is expired"?
The more information you can provide, the better we can assist you.