My late game saves have started inexplicably crashing to desktop. It appears to be at a fixed date, but I can avoid it if I go back about a year and play from there. I have no idea what causes this, although I suspect it may have to do with broken transport fleet errors with fallen empires. I looked at the crash log and it gives me various memory errors (either a SIGBUS, or a SIGSEGV). If anyone could tell me what is going on, or how I could fix this, that would be great. I have attatched the save file here.