Upgrade Spring '16 for your Wiki!
Attempting to directly upgrade a Spring '16 setup using any MediaPortal installer of version 2.1 and higher will fail. A versioning issue in Spring '16 causes the installer to believe that Spring '16 has a higher version number and causes the installer to quit.
The installer will recognize the Spring '16 information and migrate user settings as well as the existing TV database.
The media information database of Spring '16 has an old data format that can not be used anymore.
Since the media source path information is stored in the media database you need to redefine your media sources after the installation of MediaPortal 2.1 and higher.