1 removing mods doesn't matter once a game save is made... there is a file tracking that those mods are in your game and deleting the mod files will not change anything now [there are steps to cleaning out this but thats another topic]

2 if your exp says 256 - nothing then you have leveled but not actually pressed the level up option yet i.e, the game is waiting for you to goto level 2

3 what is it you want to fix?
has your character just not leveled because you didn't get around to it yet or is one of your mods blocking the level up option


Luke Skywalker: I don't, I don't believe it.
Yoda: That is why you failed.