I get this message when trying to attach the mdf supplied in the download.

GO

CREATE DATABASE pubsdev

ON PRIMARY (FILENAME = 'c:\dba\redgate\pubsdev.mdf')

FOR ATTACH

GO

same results for

EXEC sp_attach_single_file_db

@dbname = 'pubsdev',   

@physname = c:\DBA\REDGATE\pubsdev.mdf'

Server: Msg 1813, Level 16, State 2, Line 1

Could not open new database 'pubsdev'. CREATE DATABASE is aborted.

Device activation error. The physical file name 'd:\ssc\MSSQL$PUBLISHER\data\PubsDev_log.ldf' may be incorrect.