Busy, extended weekend for me, so I won't get a chance to look into it [until weekend is over].  That said, I can't think of any reason they should be incompatible.

I will mention that since the UI and the Info mods both are installed as a patch, they must be installed first.  Then any mods must be turned on after.  If they still don't work together tell me what you actually see (error messages or missing text in the window, etc).

Just had a moment to do some quick testing.  I did a clean install of the game and applied my Navigation Information Combo patch.  Then I turned on the Pregnancy mod and everything worked fine for me.  So my guess is that it is an install problem.

The game's mod system is certainly a bit quirky.  It creates backup versions of files and some things trigger the backup files to be copied back over the game's files.  It's possible the game did this and replaced/edited a needed file.

If you are still having trouble, I'd suggest doing a clean install.

1. Turn off all mods.

2. Unzip the game into a new directory. (delete/or don't, the existing game folder, but do not extract the clean installation over the top of the existing game)

3. Drop in my patch mod (any single one of my Info Mod, Nav Mod, or Nav-Info Combo).

4. Start game and turn on Pregnancy Mod.

5. Restart game and play.

Changing the UI certainly isn't the most straightforward with the mod system.  For my UI mod I went the direction of building the entire UI bar all by itself (and as a new/separate file).  Then I modded script files to strip out the old components and patch mine into place.  You could also do it by directly modifying the original UI, which would reduce a little of the patch work (although would still need to edit a number of things in the script to make it compatible).  Going this route becomes a little trickier if multiple people/mods want to change the UI.

About your own mod, I have noticed it before and really like the keyboard navigation through the slave list in the mansion.  Comes in quite handy.  Also, the inventory sorting is a must.

Can not say I've hooked up things like mass spells or any of the export features though.  I tend to play keeping spell usage almost exclusively to combat.  Not come up with any use for the export either (I see you say you use it for the repeatable quest system, which certainly could use help.  As it is I just ignore the quest system when I play.)

As you say, modding the game is a lot of the fun.

It sounds like you are getting an error somewhere and so the game just doesn't finish the request of popping up the combat team window.  I just did a fresh install of the v0.5.25 game and then dropped my navinfocombo directly into it from the zip file I uploaded and combat team button and team selection all comes up correctly and works fine for me.

Are you using any other mods?

Are there any warnings/errors in the game's secondary window?

Additional download now available.  It is a repair mod to allow UI and Aric's to function together.  Info Mod is not compatible.

Not sure where you are at, at this point (you will likely get better response time from me if you @ me over on discord).

Yes, deleting the backup folder is generally needed any time you manually copy any file into the strive game folders.  Although for the slave list mod I only have you copy in completely new files (the mod system ignores new files otherwise).  Note: if any mods are active when backup folder is deleted, those mods can never be un-applied or applied in a later order.  Basically when you delete the backup folder you are telling the game that the state it is in right at that second is the "base" version all things should build from or return to.

So... you installed new.  Copied the files into the game folder (before running the new install).  Then you applied my mod (the slave list mod).  Did you also reinstall random portraits?

Other than that, you installed and applied nothing else.  And now you are getting the error?

(I don't think you actually ever mentioned which patch/mod of mine you were trying to install.  So please include that info as part of what you are attempting)

If you list out step by step what you did to install the game, I can try to recreate the problem.  As it is, I don't have the error and my lines of code do not seem to match the line numbers your files have.

All I can say as a starter right now, is that the error is complaining about "slavetabopen" not existing.  This is a function inside "slave_tab.gd", which my mod does not touch at all, but Random Portraits does.

That said, most of the time the game complains about functions not being found, it is because a prior error caused a file not to fully load, and the "missing" function is part of what didn't finish loading.  Are you sure there were no errors prior to the one you reported?