The parties are generally hostile to dragons, so they might be hostile to durnehviir as well. If you'r e an ally of the dragon, they will automatically turn hostile to you (I am not sure about this, but it is the most likely).
You can try to use the console:
click on the party members and type
setav aggression 0
setav confidence 0
Sheath your weapon or they will most likely flee, but to make them normal again type:
setav aggression 1
setav confidence 3
I can't think of anything else

Is it normal that they become hostile all of a sudden and then now I can't ask any of them to follow me?

Happened in Solitude, I had Durneviir, a party goes hostile, now every party is mad at me. And I can't ask them to follow.

Any suggestions?

Some of them can be followers. I plan to fix some bugs next week and maybe add a new character. I would also like to make some of them go into dungeons but I don't know how yet.

Are you going to add a Druid to your parties or any of the newer characters? It's a great idea. Can you interact with these adventuring parties other thanjust fighting them

I had a similar experience but i cant remember where it happened, https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=614675104

well for 1 thing it wasn't deep it was like courier's voice adn 2ndly i met her in windhelm

Maybe its just a female with an exeptionally deep voice? XD. But where did you Encounter her?

well just ran into my first bug but its not a major one persay met a party with a female rogue that had a mans voice i know this because said armor clearly had the female figure and i even removed the clothes for a double check and yea again not a marjor game beacker or anything but its good to keep an eye on even the smallest of bugs

looks like a good idea, and easily expanded upon.

yeah cause i was gonna request a custom traveling group as NPC's (not followers) just to populate the world and bring my fav D&D podcast members in

The Npcs respawn individually, some things can change about them but they will stay the same Class. When one dies he/she wil rejoin the group and the composition of the group will stay the same.

so are the parties like a set group of NPC's meaning that those parties will always spawn with those same NPC's no matter what?

he means shouts where you hear the dragonborn say "i live here" "you dong belong here" "you wanna die?"

What do you mean?

An update that adds some as Followers is coming!

@CrazyM0nkey004 welll actualy if you get the alternate start mod it lets you pick from many of these shown classes s a starting set like Worrior and Rogue
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=102287878

Only fight them at the moment

do you get to be one of these classes, or just fight them?

I have played a little bit of DnD, but I am won't say that I am an expert. I have been looking into some games with DnD mechanics, which gave me the idea for the mod. My favorite class is probably the Paladin.

Sweet on a side note you ever play DnD your self if so how long have you played and what is you go to main class?

To clarify, that is a 'yes'. :)

Some characters Will use the new Weapons, but they won't wear the armor. But there won't be any conflicts with those mods, so you can use them alongside this mod.

is this compatible with mods that add items like new weapons or armors?