Okay, here's a Word document with screenshots and script info:
My Project It's about 3 & 1/2 MB download for the file.
The first few screenshots show what the level looks like when run without a script (same as preview mode). Then I show that I am adding a basic walkthrough template script. Then follows the script itself, as generated by 3DGS, then a screenshot of what the level looks like when run with this script--notice that only some windows and a sculpture are showing, otherwise all is black; I know I have many entities in my level--all of which display just fine when I build and run them on their own. Then the build log from the last build.
If anyone can point out why this is happening, I'd be grateful. At this point, I'd even be willing to upload or email my project to Conitec in case they were interested in figuring out where I'm going wrong, but I know that's not their job. Maybe someone here can figure it out from the file above. I can post more info--I just need to know what's needed. Thanks!