You could try searching the forums for anything connected to 'Ancient Exterminatus Device'... you're not the first one to run into trouble with that and mods.

You might also look for likely culprits among your mods. More invasive stuff that fiddles with mechanics and values are, in my not very knowledgeable opinion, more likely to be problematic. Graphical modifications are, I guess, less likely to be responsible for that kind of bug. I'd also be surprised if Too Many Voices is guilty.

Failing that ... deactivate everything and try again. Problem is that the more likely culprits would probably require a new session.

Originally posted by Grotzel:

You could try searching the forums for anything connected to 'Ancient Exterminatus Device'... you're not the first one to run into trouble with that and mods.

You might also look for likely culprits among your mods. More invasive stuff that fiddles with mechanics and values are, in my not very knowledgeable opinion, more likely to be problematic. Graphical modifications are, I guess, less likely to be responsible for that kind of bug. I'd also be surprised if Too Many Voices is guilty.

Failing that ... deactivate everything and try again. Problem is that the more likely culprits would probably require a new session.

This is why I hesitate to use mods. I have 8 mods going, most just graphics, thinking(praying?) they are safe. But playing the game where at any random moment one of these mods could blow the game apart is not worth it to me.

Searching for it in discussions was the first thing I did. Fiddling with them trying to determine which, if any, is the culprit, is just not worth my time. Bye, bye mods.

I can easily understand that. Mods can be great, but also a bit messy.
I have Cities+ and Too Many Voices (that one is absolutely essential , though) active. Tried a few others ... but those, while cool, led to annoying little bugs. Nothing game breaking, though. One messed up my the savegame of the one session where I experimented with it - even turning it back on didn't help.
I haven't done enough with the Space Marine Campaign to get into any trouble yet. Not my favourite faction. :)

There are a few cool other mods I'm itching to try, I'm just not in a particular hurry.

In my experience mods rarely cause issues and I currently play with 21 active, those that do cause problems usually do so straight away. Admittedly none of my friends like the quest system so we never use it. The modding community for Gladius is very welcoming and we would likely be able to help you. If you want help with mods causing issues you need to list which mods you are using and in what order, otherwise people would be wildly guessing what you have installed, let alone what might be causing the problem.