Running A23 with Autociv and Any-IP which I need to play with my fiancé. I did download some new mods just to check them out and the interesting thing is that when these new mods are downloaded but disabled, these errors will still get triggered. I didn't delete them one by one and retest each time to find the culprit but it's not the two I mentioned already or DE. Could have been one or more of the following.
Tech Tree
Borg
Special Builders
Tower Defense
Millennium AD
I will try later to add these one by one and see what the cause is but for now I have just deleted these last five and everything is fine once again.