I have a folder on an NTFS drive with a couple hundreds of files in it, one of which has a 253 characters long filename (full path > 256 characters). When this file comes into view DO crashes.
I could fix it by renaming the file (in a cmd window).
Upon further investigation it's looks like Opus indeed isn't the culprit; same crash happens in File Explorer as well. Happens when the file is a .jpg or a .png, but NOT when it's for instance a .txt or .pdf file. I've got a hunch that it has something to do with extracting an image thumbnail, which seems to be a function outside Opus, since File Explorer shows the same behaviour.