Hi,
I have another problem. I'm stuck at Ole's garden. I can't pick up flower there(no interaction symbol appears), I can't draw glyphs(nothing happens when I push CTRL), I can't leave the garden.
Any ideas? Thanking you in anticipation!

Yeah, unfortunately that's a known problem with Yani's and Ole's level (if you are interested, it happens when the game tries to create more plants of one certain type than there are points for that kind of plants).

Try to find a savegame where the garden is OK and continue from that game. It is unlikely to happen again.

You may just check a few recent autosaves for that. To make this search faster, use the console command "go". Ole's garden has number 31 (though, I'm not sure), so you should type

/go 31

Then if there are no errors in the console, you've found the right savegame. If there's large list of errors and you can do nothing in the level, then the bug's still there.

Oh, and probably the problem can be fixed if some Brother collect the colour from this garden. Or maybe not...