I have the newest version (126.96.36.199) When I insert the purchased disc in the computer ANYDVD HD scans it just fine, but power DVD will not play the disc with ANYDVD running in the background. It says the disc is an unsupported format.....you must update your software to continue. If I make an ISO just like the 1,500 or so that I have made in the past and burned with IMGBurn with zero problems it says that it is incompatible and will not play it. You are correct it is not cinavia but appears to be something within the disc that will not let it play on an older Blu-Ray player without a software update. All I can say is I have two Sony 400 disc Blu-Ray players that have never been updated that are full of movies that I have burned using ANYDVD HD and I've never run into this problem before. Thanks for your efforts to help.