I am logged in as a sysadmin.  Go to Manage>Spool>Virus Quarantine.  Click on {filename}.eml to to pop-up a window so I can view the headers.  The pop-up window comes up blank.  Refreshing the pop-up window creates an error. Closing the window and then refreshing main browser window seems to fix the problem.  I am using Chrome and running SM16.0.6382.  Is anyone else seeing this occur?