Problem with Rattatouille on Blu ray

[Mobie]

Hi I hope some one can help me (& not a stupid problem of my own making.

I have Panasonic DMP BD10 & have had no problems playing blu ray discs until I bought above.
It plays the trailers & coming soon clips but will not play the movie or bonus features.
When I can get the main menu up, it is imposed on the trailers which continue to loop in the background but have no affect which ever button I try pressing.
I thought it must be a damaged disc & have exchanged it but the replacement is the same.
This is the only Disney/Pixar I have & am concerned that this studio may have something on their discs that is not compatible with my player.
As I said discs from other studios play fine.

Thanks for any guidance/advise

Mike