I just had a combat freeze up while trying to reproduce a different bug. Here is more or less what I did. Load save Reject peace request Fly fleet from Relmion to Gumuliv Starhammer flee from battle. Fight destroyers, launch fighters One of the destroyers is killed by heat (may have been the one fighters were targeting) Combat freezes. I suspect it had to do with the fighter's target disappearing.
Thanks for the report, the save and the log. I've seen where the error is, it's related to the use of fighters. We'll analyse this asap.