I also had this issue. I used my first attack on a player, though when we helded two of the OP's. I had the 1205 error thrown. When I logged in it showed I used 2 attack on my main screen! When I clicked the war screen though it changed back from 1 attack left to 2 attacks left...
Leader of Sleepoverclub because all of the other people left and I was given the default leadership!
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