Hey,

I have been having problems being able to preview textures and nodes in the viewport.
I have tried pressing X on nodes to get a visualizer node to pop up but that doesn't seem to be working.

I makes it really difficult to texture if I cant preview different maps etc. Is there a solution for this that I am just not aware of?

Thanks

It could be related to the issue that visualizing works only for shader nodes that are part of the material network (ie, part of the input chains of the terminal surface shader). That's reported as Bug 134212.