- Minor
After Upgrading to 6.10.0-rc3 I couldn't change my Banner for the web UI. No matter what I did, the settings would not allow me to change the banner and I got stuck on this "Default Banner" (this banner with a beach and two surfers). Reboots, Browsers, different Bannerfiles... Nothing helped...) The Settings page would accept a new banner. 
After rollbacking/restoring 6.10.0-rc2 I was able to set my banner again. Can someone test this? Try changing your custom banner on rc3 and also set the custom banner off and on again, and then try changing it again. I don't want to rollback and furth too often and after some hours of testing I'm done for now 
(It could be possible that the issue is connected to ThemeEngine Plugin, which I used on rc2... maybe it's wise to remove this plugin before updating unraid to rc3... so it would be nice if someone can test this. so we know if it's because rc2->rc3 or because updating to rc3 with themesEnginePlugin in use)