Thanx for your help enkonyito. I checked all my settings. GI-path in this project still black. Doesn't matter if I have sky with or without texture. Doesn't matter if I have lights or not... Hmm... Private life of IT is big secret. [:))] [:))]
Don't care. Sometimes not everything runs perfect...
So... I made two pictures of my cousin's house main bathroom with GI-default..
DB-0
AA min 2
AA max 3
pic 1

pic 2