First operand of . is NULL, so cannot access member itemByName. (180,236) PTPP_COLLECTIONS.NavigationCollection.OnExecute  Name:initialize  PCPC:819  Statement:27
Called from:PTPP_COLLECTIONS.NavigationCollection.OnExecute  Name:Name  Statement:405
Called from:FUNCLIB_PTPP_SC.HOMEPAGE.FieldFormula  Name:NavCollHTML  Statement:790
Called from:PTPP_SC_UTILITIES.Utilities.OnExecute  Name:GetNavHTML  Statement:102
Called from:WEBLIB_PTPP_SC.HOMEPAGE.FieldFormula  Name:RenderAppNav  Statement:36
Called from:WEBLIB_PTPP_SC.HOMEPAGE.FieldFormula  Name:IScript_AppHP  Statement:52