Transfer Aborted: Instance not found
After installing the addon, I was able to use the raid finder and do a raid just fine. The default Blizzard Raid UI was still visible as I had forgotten to turn it off. After exiting that raid, I turned it off. Now every time I try to go into a raid in LFR, I get the "Transfer Aborted: Instance not found" error. All addons are up to date, I exited and reopened the game and still no luck. I got the error four times in a row. The only thing that changed in my addons was adding Vuhdo and hiding the default raid bars.