If it seems to be crashing when viewing folders with images then that's a lot less mysterious, and should be easy to get to the bottom of. It could be a bug in Opus, triggered by one of the image files, or it could be a bug in a third-party shell extension, video codec, etc. (which might be used to obtain information about a file, or thumbnails if you're using them).
See this FAQ for advice on tracking it down: Crash, exit or high CPU when viewing a certain directory.