The error says (missing tag <shapref id=_2 in segment 43-50.
Not sure what does that mean!?
Every tag that you see in on the source side of the Editor window must be copied to the target side as you translate.
It looks as if you haven't copied over a tag from the source to the target segment.
See if it shows up when you verify your document (press F8).
[Edited at 2015-03-03 17:33 GMT]