Y'know, I'd really appreciate it if you answered my questions as asked and in detail. When I ask "what version and checksum do you see", answering "the latest" is not very reassuring. I'm asked for the exact text you see; EVERYONE says "the latest" regardless of what the actual case is. When I ask you to check if you've opted into the beta, I'd appreciate it if you could confirm yes/no whether that's the case. And so on.
If you do in fact have 1.111 MLYP then Try a full clean reinstall: move any valued save games elsewhere and uninstall the game from within Steam. Then manually delete ALL the CK2 directories from under BOTH the Steam and MyDocuments folders. Now reinstall the game from Steam, and run the Verify just to make sure it all came down properly.