I think an overarching issue is that you have jam-packed the disc to the limit. There's no margin for error in En's calculations, and En always makes errors in calculations. That is likely the problem. But in case it's not, try transcoding to H.264 Blu-ray in Pr. I'm pretty sure you'll need to set the Multiplexer to TS for the next step to work. Use the Replace Asset command to replace the dynamic link sequence in the En Project panel with the transcoded file from Pr. The file transcoded in Pr should show up in your project as "Do Not Transcode" in the Blu-ray column.
Jeff