Fixed bug identified during functional testting, item #4.

PROMS/VEPROMS User Interface/dlgManageSecurity.cs

@@ -367,6 +367,9 @@ namespace VEPROMS
 			if (MessageBox.Show("Are you sure you want to delete this group?", "Confirm Deleting Group", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question) == DialogResult.Yes)
 			{
 				Group.Delete(gi.GID);
+				GroupInfoList.Reset();
+				myGroupInfoList = GroupInfoList.Get();
+				SetupGroups();
 				SetupSecurity();
 			}
 		}