I made an ISO of a hard drive rip from the Sunshine Blu Ray disk. When I attempted to play it back in PowerDVD 3730, the playback was jittery. Definitely better than trying to play back single files pre BD defeat, but very distracting as the jitter occurrs every few seconds. Some caveats: I was playing back the video on a machine with a non UVD graphics card (Radeon X1900 Pro). However, I have played back high def material in the past with no studder (processor is Athlon X2 at 2.8Ghz). Don't know if its because I made the ISO from a rip instead of the disk??? Anyways, i'm creating an ISO straight from the disk to see if that changes things. In the meantime, i've included the log file so you can have a look when you get the time. Also, let me add to the many thanks you've recieved today. Job well done Slysoft.