PSD thumbnails not showing

[Ihaveissues]

Hello, I think I had an automatic update by Adobe of Photoshop CC 2014 and most of my recent PSD do not show up in Xnview 2.22. Older PSD (made like 2 days ago) do show up. See attachment.

Is this a known bug? Will it be solved?

[XnTriq]

Photoshop CS6 psd and later versions of the format are not (yet) supported.