FSX custom library objects not showing up in Prepare3d

[dva238 9]

I created some custom library objects for use with Instant Scenery, and imported them to Prepar3d, but they're not showing up in the scenery nor the Instant Scenery menu.  What could be the problem?   I'm housing these on a separate drive, by the way.  Some of the scenery that I created that doesn't require library objects is showing up by the way.

[downscc 1,327]

You have to use the P3D SDK or a product that is compatible with v3.  ADE can place objects for you.