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Thank you for your understanding.
Your subscription appears to have expired. Support does require a current subscription.
That sounds like you are trying to install a rocketlaucnher package into an existing installation of Joomla. You should be using the "standalone" package for this.
Regards, Mark.
Please search forums before posting. Please make sure your post includes the version of the CMS you are using and a link to the problem. Annotations on screenshots can also be helpful to explain problems/goals. Please use the "secure" tab for confidential information.