I am having a similar problem with Windows 8 (clean install), but the issue is slightly different than described here.
With no apparent pattern, sometimes when I want to right-click a folder in Explorer to then drill down to copy a file to paste elsewhere, Explorer crashes - it switches to what looks like a blank Start menu with the task bar at the bottom, and after 10-15 seconds the desktop appears but the right-click operation has aborted.
Also, if I am able to successfully right-click and copy the file, when I then try and right-click the target folder to paste the file, Explorer crashes in the same way.
Even if I right-click to try and bring up Properties, Explorer crashes. Once it starts doing this, it will not stop doing it even after a reboot, until I am again able to right-click and bring up the property sheet of that folder...once I can do that, Explorer will behave correctly.
I have been completely unable to induce this behavior. It is random and intermittent, but I can tell I am looking at some kind of fault in Windows 8 Explorer.
Any hints? Any suggestions to try and enable some feature to catch Windows 8 Explorer misbehaving, when it happens, so I can post details for analysis?