Sorry, my mistake. I forgot about the importance of pressing Enter. The list in the previous post has been revised.
Anyways, it's no longer important. The game now "knows" about your mods\downloads folder. If you start over (again) and try to save the character then you should just receive an immediate "All paths found successfully." message and you'll be allowed to save.
When I pressed enter after typing folder path in buttom textbox nothing happend. When I clicked out of the buttom textbox and I pressed enter the game wanted me to save thumbnail but still I couldn't save character. But when I typed folder path in buttom textbox and then I closed Saving Character window and then I was open Save Character window again I finally could save character because all paths was found successfully.
Anyway I appreciate your help.