Import/Export error

Hi,

I've exported/imported 3 BAK successfully. With one BAK file I get an error (immediately) when importing

<2011-03-02 13:29:16.42 TID-9@ManageDbsDialogViewModel,I> ImportADatabase(GENT): Restoring database from 'C:\Program Files\Microsoft SQL Server\MSSQL10_50.MAPS\MSSQL\Backup\MAP DB Backups\Gent.bak'
<2011-03-02 13:29:16.49 TID-9@UiDataAccess,E> Exception Occurred (RestoreDatabase): The value '-1' is not within range for the FILE parameter.
   |RESTORE FILELIST is terminating abnormally.
   |Location of error report:
   |   at Microsoft.AssessmentPlatform.UI.Console.UiDataAccess.RestoreDatabase(String databaseName, String backupFilePath)

Any idea?

Regards,

Wim