The crash will be because of a shell extension something has installed that is triggered by the drives menu.
The debugging mode in Opus won't help here as it's only for context menus that Opus builds itself. The context menus for the drive roots are a special case where Opus just asks the shell to display the menu. (Which makes it unusual for something to crash in Opus but not Explorer, but shell extensions often have bugs that only get triggered in one program or the other due to something fairly random.)
To track this down, use ShellExView, sort by Type, and disable all Context Menu type extensions. Reboot and see if the problem still happens. If it doesn't, re-enable a few at a time to work out which extension is causing the crash.
If you have any backup tools (e.g. Acronis True Image) or disk defrag tools, or cloud storage tools in that list, I would suspect them first as their shell extensions are more often the cause of problems than other types of software.
If there are crash dumps, you can also send those to us to look at, which sometimes let us tell you which extension is causing the crash: Crash dumps for bug reports