XnViewShell preview not shown in file dialog

[XnView_Lover]

Hi everyone,
Everywhere in Windows ﴾on desktop, in a folder, in a subfolder, etc.) when I right-click on a photo, XnView Shell Extention is working good and I can see a thumbnail of my picture on right-click menu. But in an "Open File" requester, XnView Shell Extention thumbnail preview is not worked at all and there is not any thumbnail appeared in right-click menu! This problem was appeared after upgrading to XnView Shell Extention v4.1.0 x64.

Can you help me solve the problem?

[XnView_Lover]

I solved the problem myself. This is a bug in x64 version. I installed x86 version, the problem solved.