Mid-game mod intall, cannot load game.

[Trickerwow]

Hello, i'll go straigh to the point. I've been playing W3 for the first time with some mods, about 63 mods, at the moment i'm at Novigrad finshing the Ciri search in this area aproaching my travel to Skellige, but i've forgot to download the Skellige Winter mod (https://www.nexusmods.com/witcher3/mods/4138?tab=posts) i've wanted this mod intalled because of the atmosphere and thought that would be cool to play a truly snowy area. But when i install the mod manually in my folders, just at the menu screen the game cannot load my last save and sudenly a pop up window appears saying that i do not have some contents in game activeted (expansions and extra items - wich does not makes sense, since i'm playing Next Gen+All DLC and stuff) impeding me to play in my current saved game but permits me to start a brand new game. i'm playing about a 100hours so i do not want to start a new game just for one mod, so there's any solution to this problem? i'm doing something wrong ?