Nodes screen isn't allowing me to add to it. 2.71

Hi all,

Okay, I’ve only started ‘blending’ within the last week and so far I have learned loads! And had lots of probs…

The one I’m having at the moment involves using the nodes screen. I’ve seen many tutorials (blenderguru for one) using them, so I thought I give it a look to see what I could do to my still and animations. However the screen is blank (even after rendering) and I can’t add ANYTHING to the nodes screen.

I’m not sure what I’m doing wrong here…

Any pointers would be greatly appreciated.

Mike

My guess is that you haven’t enable the node tree you’re trying to use. Can’t tell which since you haven’t included screenshots or a .blend file.