Some time ago I posted that when I upgraded my version of Lr to the current version, 2015.6, I lost all of my settings, presets and plug-ins. I was advised to check my settings and be sure that the "Store presets with this catalog" box was checked. I checked it.
Today I went to do some work and Lr refused to open. Not knowing the issue, I rebooted my machine (Windows 7) and then opened Lr. Lr opened rather slowly and was performing in an odd manner. I then noticed that all of my settings, presets and plug-ins are missing again. I checked the "Store presets with this catalog" box and it was unchecked. This was not an upgrade - it was just a standard application launch. Oh, and one other observation - when I launched Lr it requested me to sign in to Adobe Cloud, which it does not normally do and then it began showing me the beginner tutorials, which I turned off, as if I had never used Lr before.
What the heck is happening here? How do I prevent the loss of my settings - it takes quite a bit of time to reset everything and download all the plug-ins. I really don't want to be doing it over and over.