(https://www.wallworm.net/proxy.php?request=http%3A%2F%2Fi1143.photobucket.com%2Falbums%2Fn631%2Fboomdaddy909%2FCapture-3_zpsd53aabab.png&hash=2436208542f1e1eca8946e04c6fc319b5ad0d3b2)
What does this mean? It popped up a few days ago, then went away. and Now it's back. I figure I must be doing something wrong.
I'm not sure about this error. I've never seen it. Perhaps there was a Steam Update ... try running Hammer or model viewer for your mod once then recompiling the model.