I installed SQL Server 2012 trial copy and I am attempting to load the AdventureWorks DB downloaded from
http://www.wrox.com/WileyCDA/Section/id-811019.html

The zip file only has a MDF file and no LDF.

The following error message is received when attempting to create the DB:

File activation failure. The physical file name "C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\DATA\AdventureWor ks2012_Log.ldf" may be incorrect.
The log cannot be rebuilt when the primary file is read-only.
Msg 1813, Level 16, State 2, Line 1
Could not open new database 'AdventureWorks2012'. CREATE DATABASE is aborted.

Here is the create DB statement:
create database AdventureWorks2012 on (Filename = 'C:\AdventureWorks2012.mdf') for attach_rebuild_log;

Looking for help to resolve this issue.

Thanks...

I am the similar problem, I am using the SQL Server 2012Enter.. version.
I fallowed the instructions in Lesson 3 to download AdventureWorksDW2012 database from the Wrox website at www.wrox.com/go/SQLSever2012DataSets.

after unzip the mdf file to the folder SSIS at C:, the executed the code as
the the error messege as
Msg 5105, Level 16, State 2, Line 1
A file activation error occurred. The physical file name ' C:\ SSIS\AdventureWorks_DW_111810112X.mdf' may be incorrect. Diagnose and correct additional errors, and retry the operation.
Could anyone can help me to solve this problem, Thanks.