DVDit Pro and Blu Ray quality

Hello all,

I've got an 8-core running FCP. I am capturing uncompressed HD video & audio off of an HDCAM-SR. I am trying to output the highest quality video I possibly can through Compressor and then brining it in to the Windows side of my Mac running DVDit Pro HD and burn a Blu Ray from there (I do have a Blu Ray burner). I can convert my uncompressed video to high quality M2Vs, but DVDit does not seem to like anything I give it that has a data rate satisfactory enough for reproducing "HD" picture. When I try to execute the burn, DVDit starts the process, but then stops before it actually burns anything. I've changed the preferences on DVDit to import all files and I have also maxed out the HD transcoding settings in the User Prefs. I am a video amatuer (with some serious equipment) and I just need to know what I am missing in terms of getting as high a quality picture as I can onto a BD-R using my setup. Any input would be greatly appreciated.