Hello again everyone. I solved my problem: editor does not see playerProfiles folder if the full path to it contains non-english letters. Probably it is true for data folder aswell but that was not my case. Dairymoose, I am sorry for taking probably too much of your time trying to help me. Your editor is awesome, keep up the good work.
Also you might want to add this info to readme/main post in case of someone else having the same situation.