Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/CsvImporters/CsvImporterSurfaceLines.cs
===================================================================
diff -u -r4070 -r4098
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/CsvImporters/CsvImporterSurfaceLines.cs	(.../CsvImporterSurfaceLines.cs)	(revision 4070)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/CsvImporters/CsvImporterSurfaceLines.cs	(.../CsvImporterSurfaceLines.cs)	(revision 4098)
@@ -156,7 +156,7 @@
     /// <returns>the name of the temporary file</returns>
     private string CopyToTemporaryFile(string fileName)
     {
-        string newFilename = Path.GetTempFileName();
+        string newFilename = Path.GetRandomFileName();
         File.Delete(newFilename);
         File.Copy(fileName, newFilename);
         return newFilename;