Never-Ending Loop of DEATH

[xXBalthorXx]

So this is the strangest issue I've had so far with Fallout 4: the game refuses to start by simply opening the launcher again when I press play, as if it was pointing at the laucher .exe instead of the fallout4.exe. Opening the fallout4.exe directly makes steam open the launcher (as always), but the launcher leads back into itself again and again. F4SE's executable also leads to the launcher. I'm baffled by this. The only thing I've done is updating a couple of mods, there are no conflicts or issues, I've looked thoroughly in FO4Edit. I haven't seen anyone with similar issues anywhere, and I don't have the slightest idea of what this might be.

[BlahBlahDEEBlahBlah]

Being less than helpful (trying not to threadjack, so some actual advice near the end), but...

I had the same issue, the launcher loop.

Did lots of things...and eventually got it to not do that.

*However*, now NMM ignores (completely skips) the Fallout 4 launcher and goes straight into the game.

*Also*, editing the fallout4custom.ini (or the fallout4.ini) to (re)include the below, now just results in open app>black screen(no loading right-bottom corner "loading" icon)>crash:

[Archive]

bInvalidateOlderFiles=1

sResourceDataDirsFinal=

So, without those edits to the ini, I'm left with certain mods not performing correctly, if at all. =/

 

A few of the steps (that I remember) I took (in several combinations) that you might try, with better luck:

-Run Fallout4launcher.exe as admin and/or in compatibility mode of XX

-Run Fallout4.exe as admin and/or in compatibility mode of XX

-Verified files through steam

-Replaced ini's with copies from working PC

-Edit: Ran the game via its shortcut, through NMM, and through Steam "Play" button

 

So, I'm kinda stuck myself. If you figure it out, maybe I'll revert and follow whatever you've done.

 

(knowing what I do for a living would make me embarrassed that I've gotten stuck on this...grr)