Subject.
No matter which way (via internal Properties command or context menu with Windows properties).
Is it only for some file types?
Does the same thing work OK in File Explorer (Windows Explorer)?
Any types.
Windows Explorer open properties ok.
Crashes with this dialog:
If a crash dump is created matching the date & time of the crash, you can email it to me (leo@gpsoft.com.au) and I'll see what it shows.
The problem is most likely a shell extension that adds to the Properties dialog, crashing when called by Opus. ShellExView can be used to view and disable shell extensions to track down which one is doing it, but the crash dump may pinpoint it quicker, so let's try that first.
minidump was sent
Thanks for the minidump.
The crash is happening inside a YanexDisk shell extension. It looks like the same issue as in this thread: DO11: Right click file properties crash
Afraid that Yandex say that his extension works fine with Windows default Properties and I must report to DO team, because crashes DO, not Windows or Yandex.Disk 
But I'll try to report to Yandex Team too.
It's crashing inside their DLL, that much is certain.