That's not the problem. Our problem is that we've updated our inventories, but anything new in our inventory won't rez into the beta grid. For instance, I had Object 1 in my inventory before I updated my inventory, and wanted Object 2 inside the Beta Grid. So I indeed update.. and now can see Object 2 in my Beta Grid inventory. But when I click and drag it to rez it within the world, it doesn't rez. Object 1 rezzes just fine, but not Object 2. I tried two different viewers. One gave me an Asset Server error and the other simply gave me a red crossed-out circle symbol where my cursor was.
And to add; this has not happened before. I've updated my inventory quite a few times a few months ago, and everything worked fine.