Hi

Not a solution, I'm afraid, merely an observation and a suggestion.

I've played a lot of XL3 + the most recent version of Tyberius' add-on (at least six campaigns, all from Early) and I have not encountered the problem you are describing.

The only similar-ish problem was with a Hungarian crusade marker, which I resolved by going back to a year prior to its appearance and editing out the Hungarians' ability to create crusades.

My suggestion is you do a complete uninstall and then reinstall everything. OK, that's best part of an afternoon's work so make it coincide with a sports event or film or some similar you want to watch on the telly.

Hope that helps

Regards
Victor