Redownload the extractor again, should be OK now
... scratch that, it should be working fine.
The app is targeting .NET 4.5, and the "BinaryReader(Stream, Encoding, Boolean)" ctor was added in v4.5, yet yours is missing it. A mystery ...
Can you redownload this:
http://www.microsoft.com/en-us/download/details.aspx?id=30653 and try again?