Have you run the little Inspect.exe that is now included with BD-Rebuilder, just to make sure all the auxiliary programs are installed correctly?
What format did you rip to? If you ripped to file format, you might try playing the movie with the trial of Arcsoft TotalMedia Theater Platinum just to see if it has been decrypted properly. Or use the free program Media Player Classic HomeCinema and select the main m2ts file within the Streams folder.
If you ripped to an ISO, you can mount it in Slysoft's free program, VirtualClone Drive and try playing it with the programs mentioned above or PowerDVD or WinDVD. Again, you'd need to select the main m2ts file to play it in HomeCinema.
There is an update to BD-Rebuilder released today. You might want to try it also.