while Importting Ax 2012 r3 contoso data Error

while Importting Ax 2012 r3 contoso data  Error

Unhandled Exception: System.NotSupportedException: The given path's format is no
t supported.
   at System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boo
lean needFullPath)
   at System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[
] str, Boolean needFullPath)
   at System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionA
ccess access, AccessControlActions control, String[] pathListOrig, Boolean check
ForDuplicates, Boolean needFullPath, Boolean copyPathList)
   at System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionA
ccess access, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFul
lPath, Boolean copyPathList)
   at System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess
access, String[] pathList, Boolean checkForDuplicates, Boolean needFullPath)
   at System.IO.FileSystemEnumerableIterator`1..ctor(String path, String origina
lUserPath, String searchPattern, SearchOption searchOption, SearchResultHandler`
1 resultHandler, Boolean checkHost)
   at System.IO.Directory.InternalGetFileDirectoryNames(String path, String user
PathOriginal, String searchPattern, Boolean includeFiles, Boolean includeDirs, S
earchOption searchOption, Boolean checkHost)
   at System.IO.Directory.InternalGetFiles(String path, String searchPattern, Se
archOption searchOption)
   at Microsoft.Dynamics.AX.Dataport.SqlHelper.GetDifferentialTableNames(Datapor
tDatabase db, String directory) in e:\bt\110700\Source\DataPort\Dataport\Library
\SqlHelper.cs:line 721
   at DP.Program.Execute(String currentDirectory, DataportDirection direction, S
tring directory, String database, String server, DataportAction action) in e:\bt
\110700\Source\DataPort\DP\Program.cs:line 183
   at DP.Program.Main(String[] args) in e:\bt\110700\Source\DataPort\DP\Program.
cs:line 82


solution : Give the read ,write and DB-owner access of database.