Check that Opus is not running as administrator, since that will cause DOpusRT.exe (running without elevation) to be unable to tell dopus.exe (running with elevation) to open a new window when you double-click the desktop.
Check that Opus is not running as administrator, since that will cause DOpusRT.exe (running without elevation) to be unable to tell dopus.exe (running with elevation) to open a new window when you double-click the desktop.