I have a similar issue with both my music and my movie libraries - after loading part of my music library, it quit. And it only showed the "preparing the media library" screen message for most of an entire day. I gave up, uninstalled it and then reinstalled it and then only permitted it to search my movie library. This worked, although slowly, and after a whole day it only got up to maybe half my movies (2K - I know, a lot but I have a 24TB RAID 5 disc array). So I quit and shut down the computer, and the next day when I loaded up PDVD14 - no movies at all and back to the "preparing the media library" screen, for about 4 hours until I gave it up as a bad job.
Contacted Cyberlink tech support and sent them a bunch of screen shots after updating to the latest versions of PDVD14 and all drivers for my i7-3770K system with AMD 7970 graphics card - no resolution. The last message I got (over a week ago) was that they had to kick it up to the next level. In the meantime I uninstalled PDVD14 and went back to 13, which had no problems. Will give them another week or so before I ask for a refund of my purchase.. Have no idea what changes they made in 14 from 13, but it seems like compatibility with certain systems is an issue.