Buffer Overrun

I just completed what I thought to be my first metaverse game. I began it in 1.4x, and completed in 1.5. (DL). It was a military victory. The military victory movie plays, but when it ends, I get the buffer overrun message, and can't post to the meta. I have tried everything I can think of, but I always get the same message. I have sent off a smart exception, and have a savegame, which reproduces the problem. Any ideas? This is the first time that I have experienced this particular problem.