Here are a few steps you may get rid of the Marionberry error !!!
- Log out of Destiny and completely turn off your gaming console, and networking hardware. Wait for about 30 seconds and restart each device at a time.
- Decrease the firewall security
- Also disable the UPNP function from the router
However, as you play through the University servers, you may can't do anything about it.
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Also i found this over the net:
http://www.product-reviews.net/2015/03/02/destiny-down-with-marionberry-banjo-server-errors/