Why doesn't the surface appear in workspace?

Hello,

I’m new in Dynamo. I’m trying to create a surface with Surface.ByLoft node. When I connect the graph to this node, surface doesn’t appear in the workspace but if I use a watch 3D node then I can see the surface. See captures below

Anyone can help me?

Thanks in advance

It appears you are looking well beyond the limits of the geometry at the moment as I’m not seeing the grid. Try going into the preview window and zooming extents.

See this capture:

When I connect the node in red, the grid desappears and also the geometry.

Any idea?

Can you upload your graph? Something doesn’t look quite right…

I can’t. I got a message “Sorry, new users can not upload attachments”

Google drive/dropbox/etc?

Or a complete screenshot by a camera export (top right corner of the window) so I can see the entire data set would work.

Here https://drive.google.com/open?id=0B_gUKvKO-yluYzI2eFY3NHBFODA

No Issues here. Maybe a graphics issue on your machine, or a lack of ram. Switching to manual execution mode may help.