"Turns to next available unit:" stopped counting down

[Paladin-Weabb]

Hello Medieval 2 fans. It's my first post here which I write because I've got a problem with Stainless Steel 6.4 - I play Poland and I cannot recruit Piast Nobles/Strzelcy/Ballistas.
It's currently turn 43 of Early Era Campaign, I have two stone Castles and each turn I see this: "Turns to next available unit: 6" (for Piast Nobles). The counting just stopped at that value. Similar thing with Ballistas, Strzelcy.

Does anyone know what's wrong? My polish kingdom has hold it's own against multiple attackers for a long time (since turn 30 onward) but now I'm failing because my enemies start sending better units at me and my Eastern Spearmen and Spear Militia cannot keep up anymore... And Piast Nobles are no where to be seen...

Any ideas Guys?

[Losthief]

what submods are you using? (i.e. what did you tick during setup). Guessing its a bgr thing.