A few turns after I declared war against black and moved my units into their territory, one of my armies randomly was unable to be selected. Clicking on the army just brought up the last selected army, and their lack of actions blocks the end turn option. Clicking on end turn button acts the same as if I clicked the army on the map. Using the arrow buttons on the army select screen works fine for every army except the glitched army. The camera pans to where they are, but it keeps using the last selected army for the popup. This bug has made the game unable to progress, as I cannot select the army to give it orders, or even delete it.

Glitched horses save.ctr

Here's a save from the turn before
auto-save 529.ctr

Update: This time the bug keeps biting. The army was forced into a fight, which was handily won, but next turn comes around I still could not select the army. I am at the end of my rope here, I've tried everything I can think of. Please tell me somebody else has encountered it when I have now encountered it three times in two games?

Glitched Horses 3.ctr

I think I've made a breakthrough. The issue appears to happen in-between turns. As a last ditch effort, I selected the army before I ended the turn, and now it has been attempting to cycle over to the next turn for 15 minutes. The instant I switched away from the army, the turn finished waiting and I could no longer select the army. I've also noted some other oddities.

1. Moving another unit into the army seems to fix the bug, allowing you to reselect the army.

2. Taking one of the cavalry units and splitting it off breaks the new cavalry army, making it unselectable.

3. All of the times I have encountered this bug it has been with the Knight or one of its unique replacements.

 Hopefully this helps in fixing the bug in some way.