DoubleYou

Verifying integrity of game cache should always be safe with the STEP setup, and is a perfectly valid way to restore the uncleaned DLC.

The mod is rendered redundant with ENBoost, but since it doesn't hurt to keep it in, we've left it.

Alt-Tab back into the window should fix the problem of not being able to use the options. I'm guessing you're on Windows 8, and because of some of the ways it does things, you can find yourself in a state where the program window is shown, but your controls are still not directed to the app (not sure if this is a bug or something, just something I've noticed). Alt-tab fixes it. As to your other issues, I really don't have enough information to diagnose the issue. Perhaps Steam isn't running when you launch Skyrim?

Yes, in the little bit of testing I did with Oblivion, it works if you place skse plugins in the actual data folder. Unfortunately, I never enjoyed the game (!) so I haven't tested it extensively.

Most likely you didn't have Steam turned on when you launched, so it never could actually launch.

Actually now that I look again, it was an incompatibility between ENB and OneTweak with the borderless window options I believe. Only SKSE plugin I have heard as being incompatible with MO is Nitpick, since they both mess with the same thing.

Sorry, I was just trying to explain why I hadn't been on your case over it. I thought you had asked why no one had noticed. I've been preoccupied with schoolwork as I'm working my senior year of college. Is there something you wish us to test?

Be aware that OneTweak does have some compatibility issues with MO that may induce crashing (if my memory serves me right).

I've been ignoring mod updates lately... I generally wait a few days for authors to fix the bugs

The other script extenders are created differently. It's not like TES5Edit, where the same executable is applicable to all games. Instead each is created differently. I suppose some good coders could go in and edit them to work with MO, but script extender plugins are probably some of the cleanest in-data mods ever created, so there isn't much incentive. One thing I've wished we had in these situations is an option to install these mods to the data directory within MO, with a big fat warning sign or something. But I haven't used MO much with the other games, so it hasn't been a major annoyance.

Why would you want to delete them? They seriously take up just a tiny bit of space that could save you issues later.

https://wiki.step-project.com/Guide:Mod_Organizer#UI_Settings

I would disagree. Why impose a limitation that doesn't exist for the programs? It is clearly obvious that the game already limits it for you (instant CTD = problem).

Not all mods have a plugin, and I'm not familiar with this mod, so I don't know if it has a plugin or not. Since it indicates that it is indeed overwriting something, it must be there, unless faulty archive invalidation (unlikely).

You will not need to enable your mods again. Everything will be intact. Only thing you might have to change is your executables if you do not install them to the same locations.

I've seen it. The problem is, I never have killed my saves...

What are your OneTweak settings?

Yes, run LOOT through MO. Just don't use Sort as a replacement.

It may be that you used MO's Sort button to sort your plugins rather than LOOT external, which is a later version. MO's Sort button doesn't sort it entirely correctly last I checked.

First, make sure you are using the latest STEP Extended Patch. Second, does the STEP Extended Patch show any missing masters?

Make sure that when the Consistent Older People ESP is active that the Bring Out Your Dead ESP is active as well.

Hmmm... If you're right, maybe all we need to do is add some weight to the corpses.

One of your tweaks is overwriting this tweak. You need to find the conflicting tweak and tweak it, i.e., do what the warning says.

I thought that his writ of sealing wasn't on his personage but lying somewhere.

The SKSE folder and the SKSE mod folder are not one and the same. The game doesn't see the SKSE mod folder. You need to create the SKSE folder, or else SKSE will not see the ini and it will be placebo. When you open the SKSE mod, you need to see two folders: one called scripts and one called SKSE. Scripts folder will have the scripts and SKSE folder will have the skse.ini.