Could not load file or assembly 'Microsoft.sqlserver.connectioninfo, version 10.0.0.0, culture: neut

[Kube]

I've been running into this error for the past several hours when I started reading through Head First C#. I tried to make a new table for a local database to be greeted with this and only this:

Could not load file or assembly 'Microsoft84.sqlserver.ConnectionInfo, version 10.0.0.0, Culture: neutral, PublicKeyToken=89845dcd8080cc91 or one of it's dependencies. The system cannot find the file specified.'

What should I do to fix this?