Report does not generate and is left spinning after upgrading to 6.4 (4298793)

After upgrading the virtual K1000 to version 6.4, reports do not seem to generate. Instead, the tab shows it is spinning and attempting to launch and later returns an unknown timeout error.  When trying different browser types (Internet Explorer 9, Internet Explorer 10, IE 11, Firefox 30, Chrome 35.x, etc), the same problem follows.

Note:  Even if the webui experiences issues displaying report results via the browser, it is still possible to use a 3rd party reporting tool (e.g. MySQL Workbench) to generate report results.