Its possible that this file is not important, see this post and read Yarlen's reply #4.

I am not sure about your other problems, but if you post a replay I am sure someone might look at it.

I have played Trinity with my share of wins and losses, but Rebellion is a different matter. Each time I play Rebellion 2hrs and 20 mins into the game, the enemy produces undefeatable odds against my superior troops and development and anomalies occur I cannot account for. Even with  the massive troops and ships I had, I made no significant dent in the armor of the enemy. This happens every time. Recently I have been playing TEC defensive v Advent(single player) on normal setting. 2hrs 20mins into the game the enemy invades with massive forces that were not even in the vicinity. When I directed troops to three different planets, they all went to the same planet. A suicidal strategy. When I came back to a save (I have not opted into the betas, playing the 1.1 version) the enemy had suddenly produced a strong broadcast culture and reduced two of my planets to almost zero allegiance that was not even present in the save game. When I went into the developers version and watched what was happening, it was according troops and resources way beyond the settings. Rebellion seems to be a mess. What's going on? Can someone experienced explain this.

Thanks for your reply.

I am a seasoned player of Sins, as you may have noted from the above, and as you may also have noted I was playing on normal setting. How do you account for the anomalies I experienced, let alone the consistent impact of the enemy each time 2hrs 20m into the game when it devastates everything? Why would a save game produce a different scenario when I come to play it? I have been unable to complete any game on Rebellion since I began to play it a year ago.