I made new unmodded campaign and used console to set it up and everything worked. I didn't thought that mods that I was using could affect this part of the game. I am sorry to waste your time.
Summary: After disbanding party I tried to inspect troops of the party to take good ones out of it, but the game crash when I try to do that.
How to Reproduce: Disband party through clan view, then call this party to army, then try to inspect troops. This lead to crash 2 times, didn't try it...