diff --git a/PROMS/DataLoader/dlgExportImport.cs b/PROMS/DataLoader/dlgExportImport.cs
index 00c840d3..dc1771cf 100644
--- a/PROMS/DataLoader/dlgExportImport.cs
+++ b/PROMS/DataLoader/dlgExportImport.cs
@@ -180,6 +180,11 @@ namespace DataLoader
 			xd.Load(fn);
       LoadFormats(xd);
       Folder ff = AddFolder(Folder.Get(MyFolder.FolderID), xd);
+      if (ff == null)
+      {
+        MessageBox.Show("You can not import the same procedure set more than once", "Duplicate Import Error");
+        return;
+      }
       _MyNewFolder = FolderInfo.Get(ff.FolderID);
       AddAnnotationTypes(xd);
 			DocVersionInfo dvi = AddDocVersion(ff, xd);
@@ -1825,6 +1830,8 @@ namespace DataLoader
 			DateTime dts = DateTime.Parse(xd.DocumentElement.Attributes.GetNamedItem("dts").InnerText);
       string formatid = xd.DocumentElement.Attributes.GetNamedItem("formatid").InnerText;
       Format format = formatid == string.Empty ? null : OldToNewFormat(int.Parse(formatid));
+      if (Folder.GetByParentID_Name(p.FolderID, name) != null)
+        return null;
 			Folder f = Folder.MakeFolder(p, p.MyConnection, name, title, shortname, format, null, dts, usrid);
 			return f;
 		}
diff --git a/PROMS/VEPROMS User Interface/dlgExportImport.cs b/PROMS/VEPROMS User Interface/dlgExportImport.cs
index e6b1c2fb..8ea37bf5 100644
--- a/PROMS/VEPROMS User Interface/dlgExportImport.cs	
+++ b/PROMS/VEPROMS User Interface/dlgExportImport.cs	
@@ -180,6 +180,11 @@ namespace VEPROMS
 			xd.Load(fn);
       LoadFormats(xd);
       Folder ff = AddFolder(Folder.Get(MyFolder.FolderID), xd);
+      if (ff == null)
+      {
+        MessageBox.Show("You can not import the same procedure set more than once", "Duplicate Import Error");
+        return;
+      }
       _MyNewFolder = FolderInfo.Get(ff.FolderID);
       AddAnnotationTypes(xd);
 			DocVersionInfo dvi = AddDocVersion(ff, xd);
@@ -1825,6 +1830,8 @@ namespace VEPROMS
 			DateTime dts = DateTime.Parse(xd.DocumentElement.Attributes.GetNamedItem("dts").InnerText);
       string formatid = xd.DocumentElement.Attributes.GetNamedItem("formatid").InnerText;
       Format format = formatid == string.Empty ? null : OldToNewFormat(int.Parse(formatid));
+      if (Folder.GetByParentID_Name(p.FolderID, name) != null)
+        return null;
 			Folder f = Folder.MakeFolder(p, p.MyConnection, name, title, shortname, format, null, dts, usrid);
 			return f;
 		}