User Console themes render improperly after upgrade

There are two possible causes for improperly rendered User Console themes:

• If you are seeing unusual rendering problems in the User Console shortly after performing a Pentaho Server upgrade, the problem may be related to old JavaScript files being held in the browser cache:

  To fix this problem, clear your web browser's cache, then reload the Pentaho User Console.
• If the login page appears blank with all input fields left-justified:

  To fix this problem, stop the Pentaho Server. Navigate to the pentaho/server/pentaho-server/pentaho-solutions/system directory and open the pentaho.xml file with any text editor. Edit the <default-theme> parameter so that only lower-case letters are used in the parameter value (for example, ruby, crystal, or sapphire). Save and close the file. Start the Pentaho Server.