Thank you for reply. Treasure works fine, but I'm still having problem with coronation. I've killed the "ruler" to repeat that action and moved new emperor to capital but still nothing.
New turn and he still waits for coronation... Also, I tried that "Lex Salica" with a son of former emperor Manuel; Alexius, but after current emperor died system choose for a heir
person who is not related to Komnenos or Angeloi (which is rulling currently because I had to kill few emperors to get a "normal" dynasty to rule). I mean, it's completely irrational.
Some random guy from family tree is now heir of the empire.
This is not a first time for something like that. In Stainless steel there is also "choose heir" option, and also doesn't work. I had to kill bunch of family members to get a rightfull heir,
but there was a lack of historical background for those characters so I didn't care. Here is different, although some characters have slightly altered biografy (Andronicus), but it doesn't matter.
Is it maybe because Manuel died in 1179., and Andronicus in 1180., so system had chosen a heir by relatives of Andronicus?
Or maybe I should have killed Andronicus before Manuel's death so that Manuel's son could inherit the throne? Complicated.
And also I married Andronicus with French princes almost at the beginning of campaign. She was 17, fertile, lovely, no secret love, no anything negative for production of children.
They were married for 22 years and had no children at all.
Maybe I'm too spoiled so searching for perfection but this "family tree" function is really pain in the neck.