PNG preview not working in File Open dialog

I can’t seem to get thumbnails and previews working with .png files. Works fine for jpg and ico. Video, text all the rest. I’ve tried lots of things to fix it. File explorer and dopus both don’t have png previews.

I don’t see any mention of png in my viewer plugins. MultiView seems to have an issue.

PNG support in Opus is built-in. Are you sure they really are PNG files?

Yes, they are png pictures. They work in the viewer pane but no dialogue boxes.

Initially you said "PNG preview not working" and now you're saying they do work in the viewer pane?

What does "no dialogue boxes" mean?

I just realised from your incredibly severely cropped initial screenshot that you mean the preview pane in the file open dialog.

That dialog is part of Windows. It's nothing to do with Opus.

Dopus doesn’t take over as the default handler on install?
When the only handler that says it handles any file type, and its library can’t be found, and my png previews are not working…

No. (There is a whole FAQ about it if you want a longer answer.)

I’ve renamed the thread slightly to help others finding it.

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