After I beat everything about the game, I decided to download some expansion mods, to make it look like my efforts in everything have altered the world. Balmora, Caldera, Ald'ruhn, Seyda Neen expansions are ones I already have. Vivec is the one I'm having trouble with. I found a couple mods that I really like, but they're not compatible with eachother (some buildings collide and such), so I went into the construction set, set the mod I plan on changing to active, make the fix, save, and then I tried to play it. Nothing happened. I made sure the mod was checked off and everything. Help please?

What do you mean "nothing happened" ?
Did the mods not work at all? Or did the edits you make not appear in-game?

I'll assume the latter for now...
You just simply need to update your Save with Wrye Mash. Currently your save is confused by the changing esp and is still showing references it has from the original.

Yeah it's the latter.

And what is Wrye Mash? Is that just something I can Google search? or is it aleady in the Construction Set? (In my 8 years of playing Morrowind I never used TES CS to its full extent.

And I've edited other mods and saved them but the changes showed up in game.

Oh dear. Never heard of Wryemash? I'm guessing you don't know about Enchanted Editor, either? Please read the following and use my advice at your own risk:

The thing is, certain data about your game is saved in the savegame file. Cells, as well as NPCs and creatures you have *already* encountered may be a part of your savegame, which isn't changed by mods.

Before doing anything, make a backup of your last good savegame file. There are a few levels of cleaning a savegame after adding a new or updated mod.

First of all, open up your game, go to a completely un-modded cell (Foryn Gilnith's shack in Seyda Neen is usually good for this) and wait for 72 game hours (hit T and sleep or wait). Some aspects of the game will reset after 72 hours of non-contact with the player. Save your game to a new slot and exit.

Second, if you aren't running MCP (Morrowind Code Patch) you should. It has fixed certain flaws in the original game which cause save game corruption, particularly after adding and deleting mods. Once you have it installed, all you need to do is open up your savegame, save it to a new slot, and exit.

Third, download and install WryeMash. Open it, go to the save-game tab. In the lower right-hand side of this window, there is a list of .esms and .esps which load when you start Morrowind. Right click on the column header bar and select "Update". You can then right click on your savegame in the left hand side and select "repair all". Start the game, open your savegame and save to a new slot. Check out the things that were supposed to have been changed and if they have, you're done. If not, there is one final step.

Download and install Enchanted Editor. This program opens .esms, .esps, and .ess files. Make sure you have a backup of your save game and familiarize yourself with the program. Keep in mind that all of what you are looking at is *in the savegame file*. There are sections like "stolen goods", "NPCs altered/killed by player" and cells altered/visited by player". You can delete these one at a time or all at once. If you delete a cell or NPC, it will be removed from the savegame and the next time you encounter it, it will be put into the game by the BSA and altered according to mod load order. This means that all NPC dialog and inventory will be reset and all items moved or stored in the cell, which were not originally there, will be gone.

You can see how deleting a companion, or your own home where you've stored all your stuff would be a bad thing?

I am not providing download links because personally, I think it would be better if you looked up these programs yourself in order to see what they do before you use them. They all have help files of varying usefulness, but all of them have extensive threads explaining their uses both here and on other TES forums.

Alright thank you so much. I will get on this right away

One question though, I'm not quite sure how to run Wrye Mash after putting it into the Morrowind folder, unless I got the wrong one...

From the http://wryemusings.com/Wrye+Mash.html#Installation:



There is a http://www.gamesas.com/index.php?/topic/1106095-wrye-mash-stand-alone/page__p__16202977__hl__wrye%20mash%20standalone__fromsearch__1&#entry16202977 version under development, but I haven't used it and cannot give you any information on it that is not available in the linked thread.

Thanks again. I couldn't for the life of me install python correctly, but good news is the standalone works.

http://img197.imageshack.us/img197/333/wryemash.png Not quite sure what to do with blankness.

As I said, I haven't used the standalone version, but no. That's definitely not how that tab should look unless you have no files in your \Bethesda Softworks\Morrowind\Saves\ directory. You may want to check the path and since you have the program up and running, read through the thread you got it from for troubleshooting. If you can't find the answer, post there and ask for help.

I know the first thing they;ll ask is if you are using the default root:\Program Files\Bethesda Softworks\Morrowind\Saves\ directory, but I have no idea what they'll ask after that or what their recommendations will be. Good luck and be sure and post your progress.