XYplorer Beta Club

For the life of me, I can't get xyplorer to make thumbnails. In Windows 10 Explorer, I use PDF-xchange for PDF thumbs, and Darkthumbs for epub, mobi, azw3, cbz, and cbr.
They all show up in Windows Explorer, but only .pdf will show up in xyplorer.
I've looked at a lot of threads, and tried just about everything. I can't get anything but .pdf to show thumbnails.
Any suggestions?

Firstly try just enabling this:

Configuration | Other | Shell Integration | 64-bit Windows | Use 64-bit preview handlers for preview

then refreshing thumbnail cache if applicable, if still not working more steps you could try are contained in this thread:
viewtopic.php?p=191952#p191952

Thanks! That seems to be working. I installed PDF-Xchange viewer and Darkthumbs. Then followed the directions in the link. viewtopic.php?p=191952#p191952

Thumbnails being generated now.