Unable to link Database to TFS

[Agile_World]

Hello All,

I am new in red gate world. I just installed SQL Source Control (3.0) in my machine. I tried to link one database to TFS (2010) and failed to do so. Here is the error message:

"The path C:\Users\username\AppData\Local\Red Gate\SQL Source Control 3\WorkingBases\jlou43zn.2yh is already mapped in workspace RI-ENG-214_1.".

This database linking to TFS should be straightforward. Can anyone give me some insight about what went wrong?

Appreciate your help and thanks ahead.