First of all I'm not a native english speaker so forgive me for my bad english
Here's my story...
Yesterday I didn't have anything to do, and decided to play oblivion again after some months... I thought "oh well, let's install al these new mods, make new character etc" and I followed pretty well the 50 steps for FCOM installation guide http://www.gamesas.com/index.php?/topic/1090232-50-steps-to-stable-fcom/ I coudn't manage to do all steps and of course I used a lot of mods which he didn't use and did a lot of stuff with out checking the guide, I hadn't unistalled oblivion and the mods so most of them were already installed
Somehow, I managed to get the most stable oblivion ever in my computer, I only experienced 3 crashes between yesterday and today in... 5 or 6 hours and game, even with the graphic improving mods, went better than usual I was very happy : D

Some hours ago I went to weye due to the Ruined tail's tale quest and I relised I hadn't installed the compatibility patch with afk weye, I did the quest anyway but after it was done I went back and didn't like it so I saved there (in weye) and quited to install the compatibility patch

I dounloaded it, found the "Region Revive - Lake Rumare" mod and I liked it so I downloaded it too along with it's patches with unique landscapes and afk weye, now I'm remembering that I forgot to install the afk weye compatibility
Anyway, with these mods my game woudn't start, I managed to find out it was because of the mod limit so I deleted a few small mods (denock arrows because cobl already integrates it for instance) rebuilded the bashed patch and everything and I could start the game
But when I tryed to load my saved game it crashed, I though "Probably this because I saved in the area in which the new rumare mod was placed" (and I hadn't installed the compatibility patch with afk weye) but I coudn't load any game, always crashed... so I unchecked all the mods and STILL coudn't load the games, couldn't even make a new game! It always crashed.

I just uninstalled oblivion, installed it in a different folder (because I had all the mods in the other one) but therefore I coudn't start the game...
I made a backup of my oblivion folder with all the mods (took a while) and deleted it, unistalled and installed oblivion again in the default folder... crashed when starting again

Now I don't know what to do D:

For a start, try removing the Oblivion.ini in My games/Oblivion and let the game generate a new one.

It worked!!!

But it still crashes when I try to load or start a new game D: What can I do?

I updated my drivers and restarted my computer... now I was able to make new game with out crashing like normally, I'll try to copy stuff from the backup of my old oblivion folder and see how it goes

I thought I was doing it alright, it seemed to work but I don't know how, I think it was when I rainstalled darknified UI OMOD, I got the crash on load back... already tryed restarting my computer, deleting .ini and unchecking all mods (and of course uninstalling darknified OMOD)

that is usually because either the Oblivion.ini needs to be rebuilt or you have a xml error What dark darnified ui are you using. the thing that you should try to do is reinstall it this is the latest one http://www.tesnexus.com/downloads/file.php?id=11280. Was there any messages you got when you installed the UI? Did you delete the Oblivion.ini after you installed the UI and then you got the crash on load?