https://forums.autodesk.com/t5/inventor-forum/ilogic-error/m-p/5787875#M363668 <P>I have a really good idea what's wrong. But I'm going to let you figure it out.</P><P>&nbsp;</P><P>Look at your error windows and read.</P><P>&nbsp;</P><P>One of the lines sticks out as familiar - "get.BomStructure"</P><P>&nbsp;</P><P>This tells us it's either that function or something invoked by/related to that function.</P><P>&nbsp;</P><P>Run a basic name check of the occurrences and let me know how that goes.</P><P>&nbsp;</P><P>Let me know if you see anything weird.</P><P>&nbsp;</P><P>&nbsp;</P><PRE>Public Sub Main() ' Get the active assembly. Dim oAsmDoc As AssemblyDocument oAsmDoc = ThisApplication.ActiveDocument Call TraverseAssembly(oAsmDoc.ComponentDefinition.Occurrences, 1) End Sub Private Sub TraverseAssembly(Occurrences As ComponentOccurrences, _ Level As Integer) Dim oOcc As ComponentOccurrence For Each oOcc In Occurrences MsgBox(oOcc.Name ' Check to see if this occurrence represents a subassembly ' and recursively call this function to traverse through it. If oOcc.DefinitionDocumentType = DocumentTypeEnum.kAssemblyDocumentObject Then Call TraverseAssembly(oOcc.SubOccurrences, Level + 1) End If Next End Sub</PRE> Tue, 25 Aug 2015 23:04:17 GMT MechMachineMan 2015-08-25T23:04:17Z