boarding and capturing ship problem

[Waszmosc]

I ve boarded and won . I was transferred to the ransaking screen . I wanted to keep the ship , assigned proper officer for the ship class , gave min number of crew , and when I am trying to conclude my capture by pressing exit, blank bar shows up in the middle of the screen , its flashing(pulsing) and all the screen is unresponsive nothing is clickable , just that flashing bar in the middle but its blank. I ve attached some sc and log files with save bf battle