It would seem that default layout is not quite valid either - Why won't my layout play? / The splash screen plays instead of my layout
If you can’t tell why your layouts are invalid (they probably have X in status column in CMS layouts page), then export them, upload them to dropbox/gdrive similar service of your choice and share the download link with me via private message, then I’ll have a look.
Unless you’ve adjusted the permissions correctly, it could be better to run the player local library in the default path ie
C:\Users\USERNAME\Documents\Xibo Library