Game not launching through F4SE with Mod Organizer 2

[NaterDaWired]

So the game was running fine until the 1.10.64 update. I updated F4SE and the mods for that. So far so good, still the game wouldn't launch. I read somewhere that antimalware programs interfere with Mod Organizer.

The game launched fine through the launcher with MO2 and F4SE launched fine without MO2.

I uninstalled ByteFence and now I am going to try and launch the game. I hope it works now.

[NaterDaWired]

So the game is still not launching though Mod Organizer 2. Not sure what to do now. I guess I will have to reinstall all of my mods. I could manually drop them into the data folder from the MO2 folders. It's going to take a while.

[★Kelvy★]

Have you set the executable path correctly, I add my own path and do not use the F4se in MO2 it could need updating.
Make a new executable
Title: My f4se
Binary: your drive>steam>steamapps>fallout4>f4se>f4se_loader
then click ADD
Click and highlight My f4se and click on RUN.

[NaterDaWired]

That doesn't work at all. Not sure why your F4SE_Loader is in a folder of its own. It's supposed to be in the Fallout 4 base directory.

[★Kelvy★]

All Iam doing is connecting the path to it
The 2 DLL files and the loader are in the main fallout page in steam(not in any folder)
f4se_1_64_10.dll
f4se_steam_loader.dll
f4se_loader
(Where you find game exe files, but not in it)
They are all you need in there

[NaterDaWired]

So I found out my problem was another mod I forgot to update for F4SE. FallSouls. Updated it and the game is now running, but it's taking forever to load.

[★Kelvy★]

MO2 should have have stated if a mod is giving an issue or missing f4se. Unless the mod is looking for game runtime version that will cause your issue.

[NaterDaWired]

For some reason I did not get a popup for FallSouls like I did for HUD++ or other F4SE mods.

Games running fine now, just need to figure out why it's capped at 30fps. Maybe its an ini issue. I thought I had to redo the INIs for the new version. I'll try reverting my INIs to what I had before.

[Thorondor]

I have this exact problem.

F4SE does NOT load the game through MO2. When I hit "RUN" in MO2, loading the game through F4SE, an error flashes and is gone in less than a second, and MO2 unlocks. When I run anything else through MO2 (Fallout 4, FO4Edit, LOOT, Creation Kit, FO4Config), it loads them successfully. When I run f4se_loader.exe independently it loads FO4, but without any of the mods.

I have spent the past two days uninstalling & reinstalling MO2, going through every mod, item by item, cleaning and organizing through LOOT and then FO4Edit, so that every mod is clean and in proper load order. I have gone through the paths in MO2 to verify they are all going to correct place. The error message flashes and is gone almost as fast as I can blink. I don't know what to do now. HELP!!!

[Thorondor]

Addendum: I discovered the error message (thanks to infal on Reddit). I made a .bat file with f4se_loader.exe with a pause on the next line and copied it to the game directory. Dbl-click on it reveals this error message:

E:\Steam\steamapps\common\Fallout 4>f4se_loader.exe
SHGetFolderPath 00000005 failed (result = 80070005 lasterr = 00000005)
Assertion failed in IDebugLog.cpp (64): SUCCEEDED(err) (code = FFFFFFFF80070005 (-2147024891))

I know this has come up before (at least two years ago, but I just began a new playthrough after a year or so layoff and now I can't load the game!

Anyone have any clue what the error message means?

[Despair]

Thorondor did you manage to fix this? I run f4se_loader.exe through mo2. no errors. But when I start a new game or load a save it says "f4se not istalled". I did turn some mods off. I doesn't show me the message but still textures needing f4se are not loading (e.g. ks hairdos hairstyles). PLEASE HELP
UPDATES: Removed all mods, verified integrity from steam re-installed mods and it got fixed. For those with the same issue.

[Harry_Hoarse]

I am also having this issue, f4se launches fine manually, just not through MO2. the script extender for Skyrim SE still launches thru MO2. I ran it in compatibility mode and as an admin. stumped. this post has good info to try but still not working for me yet https://www.loverslab.com/topic/138992-f4se-not-working-with-mo2/