Windows 10 file explorer does not display .rmtl thumbnail preview image

My system does not display .rmtl thumbnail properly.

like this. and also in rhino
like this…

I am using rhino 6.
I tried reinstalling the rhino using the installer.
How should I fix it…?

Hi @wp29dud

I don’t think I’m going to be of too much use, however it might be worth checking out the link below.
(just be careful if you end up changing anything in the Registry)

I had a similar problem about 6 months ago with a specific file type and eventually it fixed itself.
I’ve just checked and .rmtl files display for myself, which is what leads me to believe it might be something in the thread link.

Hopefully someone else has an idea as well.

You may want to do a repair on your Rhino installation.