Just got The X-Files: I Want to Believe Blu Ray and its not working with PowereDVD 8 Ultra. This happens with or without anydvd hd running in the background. My drive is the LG H20LK. I updated PowereDVD thinking that would fix the problem but that did not help.
The latest X-Files movie is encrypted with a newer version of BD+ that AnyDVD HD can't handle yet. The folks at Slysoft say it will probably be around the middle of February before it's cracked. I believe all of the newest Fox releases are all using it. Check out the AnyDVD HD section at the Slysoft forums for details.