I just installed two mods yesterday:
- Better Nightsky
- Beaming Sunglare (Original)

My character Level 30, 157 game days without issues.
I have completed Lost Boy Cave and ready my self to get out this cave..

and here it is my problem:

Every time and in every move I try to save my game I have 70% of chance to get CDT and a corrupt save!
Tried to load some early saves in this cave and still the same problem.

Any advise?
Should I deinstall some suspect mods and do a clean save?

Great Suspects:
some mods depending in obse and inventory items levelled lists

Have you tried the Abomb fix? Although, that sounds kind of unrelated. Are you using quick save or autosaves?

No I know this old tweak: disabled quicksaves and auto-saves from the beginning of my character.

I, personally, cannot recall a corrupt save that was not directly related to CTDs in my 3+ years of playing the game. I have not heard of saves automatically corrupting over time except for the abomb thing, which does not hit everyone. I know the first mod, but isn't Beaming Sunglare also just a texture replacer? Those would not effect your save file at all. Maybe there is corrupt data in your save file already. Try rolling back a couple saves. Is there anything consistent about where you are when you are saving.

I guess you can go ahead and post your load order, but you seemed to be doing fine with your mod list, right?


Edit: Has your system had any software updates recently or something?

No the sun and sky mods I listed are just texture replacers, they do not install esps.
I have a suspect:
Two day before I upgraded to the last MMM - COBL and I'm using it with "Cobl Loot-Drop-Merchant changes Proposal"
I know inventory items/ingredients when looted or purchased cause CDT saves.

I implied they were just texture replacers...?? Anyway, MMM - COBL is not yet fully compatible with FCOM, not unless it was updated while I was A-Wall a couple weeks ago. You could get rid of it. I do not know what the other COBL thing is. Could you give me a link? That description of the crash is more informative. You may have something there. Could you post your load order, please? You might as well get rid of MMM-COBL first, and see how that goes.

I tried a trick:
I have put most of my items in a container (anyway I had 0 ingredients, 0 soulgems, ..)
Then I tried to do a save. Result: CDT

No I will try WB Repair Abomb.

Edit.
WB Abomb repair worked!
But I need more tests to confirm.

WB Abomb not working after a second advanced test.
I need to know what is causing this:

- For MMM - COBM maybe it's advised to do three days wait (to reset all levelled lists) before installing it.

I should do some clean saves with some mods unistalled and a three days reset time.

The issue with MMM - COBL is that it adds some duplicate items to inventories. Just don't add it until the next release of MMM and COBL.

On the contrary, with UFCOM/Cobl you should use MMM-Cobl.esp. But you shouldn't use FCOM_Cobl.esp until the next release.

Ooohhh.... really? wow... FCOM_Cobl...

The problem I'm facing is really odd/strange/frustrating/unique ... whatever
I have the feeling the game decide himself at what time the save-CTD should happen
but all these CDT saves started in this Lost Boy Cave when I was at the end of clearing it.

I unistalled the last versions of MMM-COBL, installed again Cobl 1.72 with FCOM_Cobl
and I will see what goes..

I made a mistake. You want to remove FCOM_Cobl, and keep MMM-Cobl. I am now confused about which one needs to be updated, maybe both, but MMM-Cobl is the one you need with the latest FCOM setup.

Here my constat:

- Unistalled new MMM - COBL and installed old Cobl 1.72 with FCOM_Cobl --> Problem not Solved
- Unistalled Pluggy 1.32, ALGOHOL, Screeneffect, FM Magicka, Kyoma Journal
made a clean save --> Problem not solved.

Loaded a save where I was at the begining of clearing this dungeon --> NO Problem found !!!

SO my problem is related to something I have looted in this dungeon in later steps, but what is it?
There was a fight in a cell where there was plenty of MMM additionnal Enemies, Necromancers, ... maybe that was there were the problem started.

And what happens if you kill everyone, don't loot the bodies, and then try and leave the dungeon after you're done? Just as a test.

Hmmm, this sounds an aweful lot like what I experienced not too long ago. Although it wasn't with the Lost Boy Cavern, I think it was Onyx Cave. Other than that everything is was the same as what you decribed. Didn't use quicksaves or autosaves. Just a set of 60 saves I cycled between. In the end I was never able to find the cause, let alone fix it. I decided to just go back to a save from before entering the cave and not enter it this time. Problem solved, when I revisited it later on I had no problems whatsoever.

My suspicion went to either some sort of bug with OOO/FCOM actors (due to the fact the cave was filled with amazones) and/or inventory that caused problems when it was saved. I'm very curious as to what it might have been though.

Arthmoor: I recall testing that and it indeed worked. I attempted to track down at which point during the exploration of the cave the saves would become corrupt but I was never able to pinpoint it to a specific actor. All I know is that somewhere along the line of killing the inhabitants and looting them my saves got messed up.

-kyoma

That's pretty much what I was after, determining if it's the actual loot causing it. Which it seems to be. Which is where my lack of familiarity with the content makes me useless for anything more

Good idea but needs more time and some luck to succeed because many cells in dungeon respawn with new new enemies and loot when you load the savegame again.


I'm pretty sure this is a "loot affaire"; I recall experiencing these kind of SAVE-CTD when out a shop after making some transactions with a merchant. This could happens even with a light modded vanilla game. Like you Kyoma I was thinking to start at the beginning of the dungeon and comeback later and it's true these kind of problems disapear alone with time.

It's quite possible that these corrupt savegame with CTD comme from the following mods I'm using:
Lost Sword of the Ayleids
I'm using the last update which fix the last clue not appearing.*
I finished this quest (killed the boss I would say easily using invisibility + chameleon + sneak attacks).
I can save before the fight but when I take the final sword I can't save.

I think I have heard of that issue before...can't remember when or how though...

Good to know...
and me I was thinking was I have looted in these dungeons...: the clues (shining scrolls)
there is something wrong in the scripts of scroll (main weapon) that lead to conflicts and oblivion unable to make a safe savegame.

I hope I am not confusing this with the end of KotN bug. There was definitely something about the sword though... hmmm...

Tested thouroughly yesterday after having unistalled "Ayleid Lost Sword". The save I was using was that one just before entering "The Lost Boy" cave (but the save and some previous were initially depending on this mod, so if anything corrupt but not detected in the save I have no idea to check).
I tested ... tested in this cave until I thought this time was good but here is it: there was a time wre I got this CTD on save.
All my theory was gone in the wind

It is unfortunate that there are very few works done on savegames of Oblivion: how this engine work and what get the savegame to be corrupt.

I have done a new life to my SAVE-crash thirty level character...

I past all this evening creating a charater with the same similarities:

1- Started with pure vanilla level 1 character with the same race/look/class/birthsign
2- Cread a 38 level character in the Construction Set with the same race/look/class.
3- I wrote in a paper all values of skills given by the CS.
4- Switched to my character in the gaùme and entered the following values in the console:

advskill Acrobatics 20
advskill Alchemy 37
advskill Alteration 4
...
...
advskill Speechcraft 15

Saved and exited my game.
5- Loaded the savegame with Progress and Realistic Leveling checked
RL transformed my vanilla 38 level character to a 30 RL level character.
5- Fast travelled to Weynon Priory and delivered Emperor Amulet.
6- Fast travelled to Bruma and purchased a house from the countess (my previoyus character didn't have a house)
7- Installed all others mods:
FCOM
All Natural
Cobl
SM & FM
Quests
Tweak mods

and activated them with saves one by one as suggested by Blade Of Mercy.
8- Rebuilt Bashed Patch and made a save in Bruma Chapel Interior.
9- Waited 4 days and made another save in the chapel.
10- Relevelled NPC levels with Wrye Bash and made a new save near Bruma Statue.

Here I'm ready to a new adventure with new/old character.

New Save size = 2,76 MB
Old (corrupt) Save size = 9,09 MB

I have no idea why they sometimes become corrupt...but I get the same thing every once in a while. I just DL the last auto-save, and immediately save that in a new spot.

That is very strange. I think that bad data may be in the save already or something; however, then you'd expect you could rollback far enough to a save without corruption. Did you try removing the Oblivion.ini when you rolled back?