Added Error Log code to record errors when import fails

Added Error handling to Import so that Change Manager is turned-on after Import whether it is successful or not.
Don't allow import if the Referenced Objects have not been selected.
Turn On Change Manager if there are no active sessions
Don't crash if the Referenced Objects are not set when you right-click on a Working Draft.

PROMS/VEPROMS User Interface/frmVEPROMS.cs

@@ -538,6 +538,13 @@ namespace VEPROMS
         }
         else
         {
+					dvi.RefreshDocVersionAssociations(); // Refresh Associations Count
+					//Only allow Import if the Referenced Object Database is set
+					if ( dvi.DocVersionAssociationCount == 0)
+					{
+						MessageBox.Show("Prior to Importing Procedures you must set the Referenced Object Database", "No RO Database set", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
+						return;
+					}
           int ownerid = MySessionInfo.CheckOutItem(dvi.VersionID, CheckOutType.DocVersion);
           dlgExportImport dlg = new dlgExportImport("Import", dvi);
 					dlg.MyNewProcedure = null;
@@ -1494,6 +1501,7 @@ namespace VEPROMS
 		private void CloseSessionsNoLongerActive()
 		{
 			SessionInfoList sil = SessionInfoList.Get();
+			int i = 0;
 			foreach(SessionInfo si in sil)
 			{
 				if (si.DTSEnd == null && si.MachineName == Environment.MachineName && si.UserID == Volian.Base.Library.VlnSettings.UserID)
@@ -1502,12 +1510,16 @@ namespace VEPROMS
 					{
 						System.Diagnostics.Process p = System.Diagnostics.Process.GetProcessById(si.ProcessID);
 					}
-					catch(Exception ex)// Process not found
+					catch (Exception ex)// Process not found
 					{
 						Session.Delete(si.SessionID);// Remove Session record associated with a closed process
 					}
 				}
+				else if (si.DTSEnd == null)
+					i = i + 1;
 			}
+			if (i == 0)// Turn-on Change Manger if there are no active Sessions
+				TurnChangeManagerOn.Execute();
 		}
 		//public bool IsEnhancedDocumentOpen(ItemInfo ii)
 		//{