diff --git a/PROMS/DataLoader/Procedures.cs b/PROMS/DataLoader/Procedures.cs
index 008b40c4..28944587 100644
--- a/PROMS/DataLoader/Procedures.cs
+++ b/PROMS/DataLoader/Procedures.cs
@@ -371,11 +371,18 @@ namespace DataLoader
 					foreach (DataRow drt in dtt.Rows)
 					{
 						// get from/to seq, subtract off '0' to get stepnumber. 
+						// The 'oldto' field stores which foldout section these steps go 
+						// to.  However, if reset, the 'oldto' may not contain a reference
+						// to a foldout, i.e. may contain 'junk' data. Only add the 
+						// reference to the dictionary if it's a foldout.
 						int fromStep = drt["FROMSEQUEN"].ToString()[1] - '0';
 						int toStep = drt["TOSEQUENCE"].ToString()[1] - '0';
 						string foldSeq = drt["OLDTO"].ToString().Substring(0, 2);
-						for (int istp = fromStep; istp <= toStep; istp++)
-							stpFoldSeq.Add(istp, foldSeq);
+						if (foldSeq[1] == 'F')
+						{
+							for (int istp = fromStep; istp <= toStep; istp++)
+								stpFoldSeq.Add(istp, foldSeq);
+						}
 					}
 					ds.Dispose();
 					da.Dispose();
@@ -385,12 +392,21 @@ namespace DataLoader
 					{
 						using (Item itmF = Item.Get(hlsItemId))
 						{
-							string fldstr = stpFoldSeq[cnt];
-							int fldItemId = FoldoutStpSeq[fldstr];
-							ConfigInfo ciFold = new ConfigInfo(itmF.MyContent.Config);
-							ciFold.AddItem("Step", "FloatingFoldout", fldItemId.ToString());
-							itmF.MyContent.Config = ciFold.ToString();
-							itmF.Save();
+							// be sure that the dictionaries contain the key.
+							// Some data may be 'corrupt' and not have the appropriate linkages
+							// to floating foldouts.
+							if (stpFoldSeq.ContainsKey(cnt))
+							{
+								string fldstr = stpFoldSeq[cnt];
+								if (FoldoutStpSeq.ContainsKey(fldstr))
+								{
+									int fldItemId = FoldoutStpSeq[fldstr];
+									ConfigInfo ciFold = new ConfigInfo(itmF.MyContent.Config);
+									ciFold.AddItem("Step", "FloatingFoldout", fldItemId.ToString());
+									itmF.MyContent.Config = ciFold.ToString();
+									itmF.Save();
+								}
+							}
 						}
 					}
 				}