Cannot Make Window

[JasmoVT]

More and more frequently after capturing a ship go thorough sale, cargo value, message on crew healed by my sick bay and then i get a window style message that says:

"Cannot make window" and the game freezes back at the combat screen just before I boarded. I have never seen a window message like this before in any other context.

If anyone is monitoring this board and has any ideas, I would really appreciate it.