Sql Server 2012 _ Error 5133

Hi,

I am unable to attach example database mdf file. It gives me error 5133 though I can create new database without any problem. The error says " Directory lookup for the file "c:\program Files\Microsoft SQL Server\MSSQL11.MSSSQLSERVER\MSSQL\DATA\AdventureWorks2012_Log.ldf" failed with the operating system error 3 (the system cannot find the path specified). (Microsoft SQL Server, Error:5133)

Thanks!

Syed