BG2 Tweak Pack not installing correctly?

I saw this on the list of supported mods so I installed what I wanted from it but now my game is all messed up. I'm not sure how it happened but it seems that many of the things that were supposed to be changed didn't work, particularly in regards to descriptions for things.

For example, I installed the tweak that shuffles around weapon profficiencies which is supposed to include a new description, but the profficiencies did not change and now the descriptions that should have been changed look to be some random Haer'dalis dialog. Some of the item descriptions had this happen as well. My favorite is the White Dragon Scale description which now reads 'Come now, who could be stronger than you? Who would dare give orders to you?' That is an awesome description for a suit of armor but I digress.

I don't know what all is affected because I didn't really do much after I noticed the mod didn't install correctly. I'm going to reinstall the game and take another crack at it and make sure everything I'm using is up to date (like Weidu). Before I did this I wanted to check here to see if anyone else has had this happen before and how to fix it, since I really enjoy the tweak pack and would like to use it.