Error when running Analysis Cubes Configuration SQL 2008

Hi,

After entering all the information whithin Analysis Cubes Configuration Wizard for SQL server 2008, I'm getting the following error at the time of creating data warehouse:-

"***Fatal Error Encountered***
Microsoft.SqlServer.Management.Common.ExecutionFailureException: An exception occurred while executing a Transact-SQL statement or batch. ---> System.Data.SqlClient.SqlException: Directory lookup for the file "G:\Database\MSSQL10_50.MSSQLSERVER\MSSQL\DATA\DynamicsGPWarehousedata.mdf" failed with the operating system error 2(failed to retrieve text for this error. Reason: 15105).
CREATE DATABASE failed. Some file names listed could not be created. Check related errors.
   at Microsoft.SqlServer.Management.Common.ConnectionManager.ExecuteTSql(ExecuteTSqlAction action, Object execObject, DataSet fillDataSet, Boolean catchException)
   at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(String sqlCommand, ExecutionTypes executionType)
   --- End of inner exception stack trace ---
   at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(String sqlCommand, ExecutionTypes executionType)
   at Microsoft.Dynamics.GP.AnalysisCubes.WarehouseDB.CreateDB()
   at Microsoft.Dynamics.GP.AnalysisCubes.fMain.InstallAnalysisCubesProduct()"

I'm unable to know the cause.

Thanks.