> <Https://docs.google.com/file/d/0B0OtZ8YOIlNfei1wVGNY>
> UUlfMWs/edit?usp=sharing  

You could have provided the information asked. The second line and anything
useful:

(winhttrack -qwC2...

several: file not stored in cached due to bogus state (broken size)...

several: ...Range Not Satisfiable ..

Did you try updating the mirror to see if it was transient?
I saw similar problems - reduce connections to 1.