Ok so just to quote a page that says there is help with this, I have tried this, and it doesn't work. Here's the link: https://www.bungie.net/en/Help/Article/12407 But I will paste the body of this page below. 12/27/2014 I RECEIVED AN ERROR WHEN INSERTING AN XBOX ONE DESTINY DISC WHILE THE DESTINY TRIAL WAS RUNNING This error occurs when, on an Xbox One, a Destiny retail disc is inserted while the Destiny Trial is running. If you purchase a Destiny retail disc after using the Destiny trial, please follow the steps below to avoid this error. Fully close the Destiny Trial app. Insert the Destiny retail disc. Complete any prompted download and installation process. Launch Destiny. After successfully launching Destiny from the retail disc, you may then uninstall the Destiny Trial app. That's the Help. So I've had destiny for about 8 - 9 weeks now, and sometimes I still get this error message, not all the time, but it's enough to bite you in the ass. Following the final step "After successfully launching Destiny... (because everything is downloaded every time I start the game) you may then uninstall the destiny trial app", except you cannot as the trial has somehow merged itself into the destiny icon, it's not separate, and it's not anything specific under the manage game section either. So after attempting a full uninstallation, I still get this error code, and it's still pops up with 'Play Game Trial' if the disc isn't in, so you can see my concern here. If anyone could help me with this, so I can remove the trial for good, it would be greatly appreciated. What I should've said was I get this error code, even with this disc in prior to launch, but like I said, it's not all the time.