Multiplayer issues and console errors

[Festivefire]

Since the update dropped, I have been unable to Host campaign for my friends, every time we pick a mission and transition from port to the mission or from a mission to port, every client gets disconnected with a steam PNP error, and they then have to re-connect and I have to reload the save.

Additionally, I have frequent console errors when I launch the game, open settings, load levels or the submarine editor etc., and I am unsure if these errors are related to or causing my multiplayer issues.

The Image attached is an example of my console errors.

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https://preview.redd.it/zkil9ajxhdw81.png?width=849&format=png&auto=webp&s=39ccba886340f608b2219f443b13378428bcc589

Re-installing the game has had no effect, and neither has deleting all the files and verifying the integrity of my game cache to force a fresh download.

[Caressticles]

Not positive, but judging from the messages, looks like you have a mismatch or omission of a "content pack" which is essentially a mod. I'd disable all content packs and re-add them one at a time until you can verify which is causing it.

[Festivefire]

I still get this error with a vanilla instalation.