Most likely the "old" plugin.xml file is in your folder. This did not have the adoptions for the new compatibility system introduces with Summer 15.
But Cinema generally did not work with latest builds any longer due to fanart issues... It first needs to be updated by a dev, before it can be used any further.
But Cinema generally did not work with latest builds any longer due to fanart issues... It first needs to be updated by a dev, before it can be used any further.