Strange import crash opening hundreds of programs?

For some reason importing certain assets from the asset store (they have an Update available) is causing Unity4 to slow to a crawl and then suddenly hundreds of programs open such as notepad, calculator, everything that is running in the background. What in the world is going on? This is the first time I’ve experienced this. No, it’s not a virus; I’ve scanned 4 times and have done a boot scan as well. The import in particular causing this is latest FX Maker if any others have it and can give it a try. How can an asset import even remotely cause this?

Edit: NGUI imported fine. So it’s just this single asset doing it. Anyone have a clue what’s going on?

Works fine now with 4.0.1. So must have been some odd incompatibility or something.