I am having the same issue, But i have narrowed it down.
it does the Create WIM and get to 100 %
Then reboots and says that "an existing in-progress deployment was found but is not in an expected state. ...." i can say no here an it will try the capture again but since there is a wim file with the same name it was using before it fails.
But if i rename the Wim before i continue it will make a second wim and finish.
So it seemes that the deploment crashes at 100% the first time and i cant figure out why.
i have MDT 2013 Update 2 with sccm 1511. just did the update when this started happening. i can capture Win 10 with out an issue. but in want Win 7.
any tips would be great.
GT