Is this layout marked as valid in the CMS?
Could you please make sure and also run the verify all on Modules page - Why won't my layout play? / The splash screen plays instead of my layout
Does the .xlf files in player library (7.xlf 20.xlf) look fine to you, does they have everything they should have?
Does user which runs Xibo have correct permissions to player library?
Does this player appears as logged in (in CMS Displays page)?