Smart Components Missing in Renderings...

First off, thank you in advance for taking the time to help me out with my current situation. I'm having an issue with my smart components showing up in my renders AFTER smart features are inserted.  Prior to "inserting smart features", the smart component shows up in the rendering fine, but after I insert the smart features to the component it is missing from the rendering MOST of the time. I have had occurrences where a few of them have shown up in the rendering.

Example - We do alot of oil and gas modular skids with piping. I have a U-Bolt that is a smart component that has smart features to cut the holes, and add the washers and nuts. Like I've said previously if I just add the U-Bolt in the model, I have no issue with it showing up in the render. But once I insert the smart features ALL the U-Bolts go missing from the rendering, OR on a rare occasion, I have 2 or 3 out of 40 show up. There is no consistancy with this. I have tried changing scences, appearances, etc., with no luck.

(This problem is occured other smart components as well, not just my u-bolts)

Please do not hesitate to request additional information if needed to assist me in solving this problem. Thanks - Craig

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