Opus XP64 Bug?

I have Opus V8.2.0.2 and XP 64. Normaly when i doubleklick on the desktop it opens a new OpusWindow. Under XP32 it works., but with XP64 it seems that is does not rekognize the doubleclick.
I go to the preferences and activate and deaktivate the "open new window on doubleclick on desktop" feature but it makes no difference.

I also use an Logitech MX3100 Desktop. Is it an error from Opus, XP64 or Logitech driver ?

Does someone else use Opus with XP 64 an it works ?

Please search our forums before posting. This has been covered a number of times.