I am working in Building systems (2007) running pipe. I am also using Navisworks Simulate (2011).
The issue that I'm having is I was working on some pipe yesterday and all of a sudden, it shows up in Navis as just plain lines. I lost all 3D visualization. This is hit and miss and part of the pipe appears correctly. I add a "tee", reducer and then those newly added parts are lines. The pipe I added these entities too, still appears correctly.
I've redrawn it twice already and at some point of adding parts, the visual display changes
![Sad :(](http://www.theswamp.org/Smileys/black/sad.gif)
Anyone run into this issue? It kind of concerns me a little as I've got an entire mechanical room drawn up and I'd hate for all that to turn to just plain linework.
Any info would be appreciated.
Thanks,
Pieter