try to do a Search and Destroy on your ESP/ESM files. Choose a group of files, like all basic files+NVEC. try to launch the game and then a clean save, if that works restart but this time add the MMUE files, and so on, and when you find a group of files that crash the game you split that group into single parts and you try to add 1 part at the time, when you find the ESP that causes the crash you Delete it from your PC and then you Load all of your files, then you try a new game and when it doesnt crash you found the cause (highly recommended to leave the ESP/ESM unchecked untill you are Sure that one was the cause)