Uh, where to start.
1)
First of all you need to find the file named
WeiDU
It is a text-file (technically named WeiDU.log)
It is very easy to find, sitting at the same place as the execution file of your game (which you use to start the game). Because I have no idea which platform you use I can't be more specific. But to make an example for windows on Steam the place to look out would be here: C:\Program Files (x86)\Steam\steamapps\common\Baldur's Gate II Enhanced Edition
Copy its content here in this thread.
2)
Mods are not always compatible to each other. That much should be clear without me enlarging on this subject. So at least you have to thoroughly read their readme to learn about their compatibility issues. If you don't than the occuring bugs are your own fault.
Even then incompatibilities use to come up. Because a mod author usually does not test his mod with _every_ other mod existing. In other words: When installing two mods that are not explicitly cleared in the respective readme of the two mods you are taking a risk. So there is a simple rule: Only install mods that you really really really want to use. Less is more here. It's simple probability: With each mod you are installing you are creating more and more possible bad interactions between the mods, and the risk is going up nearly exponentially. Less is more.
3)
Secondly I have to tell you that your problems are probably mostly on you. Yes, sometimes mods are not compatible with each other, but your way how you use mods is creating even more bugs and danger than there already is when using mods in the first place.
a.
Never ever "reinstall" in any kind. If your installation is incorrect then you have to start from scratch by erasing all mod file everywhere and completely reinstalling the whole game. Otherwise terrible things are bound to happen.
b.
Never ever uninstall mods during a running game. Do not touch your mods after the first step of your journey. Terrible things are programmed to happen if the game started with certain mod that you later erase.
Yes, in theory this might be possible. And sometimes this really works, but many times it only leads to desaster. So you would be outright crazy (excuse my bluntness) to try your luck like this, because each time you try a stunt like that you are risking the functionality of your saved games with usually many hundreds of hours game progress.
You experienced enough bugs already. So you know.
Next time you mod the game do it right. Then you won't have that much problems, I am sure of it.
Good luck, Seewead
edit: spelling