Opus12 freezes on .mkv video files

opus12 freezes when Viewer Pane attempts to render .mkv video file

Please see here:

I tried everything on the page, but nothing worked. Anything else?

So you disabled the Opus Movie plugin and the viewer pane still freezes when displaying the files?

Can File Explorer's viewer pane display them on your system? Or Windows Media Player?

I think the problem was limited resources. It seems to be ok once I rebooted the machine. Also, I no longer download .mkv files.

The problem files could not be deleted until rebooted, and they weren't playable.

That means something had the files locked. Broken video codecs/splitters are often the cause of it.