If you are getting an error reading your disc, you may need to apply an update to Intel Rapid Storage Technology. My computer didn't have such a thing on the list of installed programs, but installing the software on my PC fixed the issue I was having with vudu to go.

IRST 12.5 Download

I know LocN already posted this, but it's in page 14 of a 19 page thread, and likely difficult to find for new users. I hope someone can sticky this, so people don't have to read through 14 pages to find it.