Chirone, thank you so much, that was the real problem!
:attn:

you made my day

could you tell me where approximately this could be?

i'm learning using a step by step tutorial.
the strange thing is that in the lesson teaching to build curves with cv curve tool the color of...

hey, i have problems with applying smoothness to curves.
i create a curve with cv curve tool, then apply display>>nurbs>>fine, or just press 3. nothing happens. nothing happens on pressing 1 or 2...