I try to create a new ZIP using function CreateFile but; I recive this message:  Generated temporary filename was not unique. Type: Xceed.FileSystem.DiskFile FullName: C:\Documents and Settings\MARTHAXP\ASPNET\LOCALS~1\Temp\b0bca9ce-998b-422a-9c86-5288ef2934f8.tmp  Please if everyone say something help me.