InfoPath Dev

I'm trying to delete un needed rows in a form before the data is pushed to a separate sharepoint list. I'm getting an error that states, "A calculation in the form has not been completed. The number of calculations used for a single action exceeded the maximum limit." I can't figure out what is causing the issues. Here is my code. If anyone has any ideas, I would be eternally grateful!

 EDIT: I've just noticed that error is thrown when this line is executing = oParentNode.removeChild(node) but the error occurs at irregular intervals as far as I can tell. It's not consistent.

            thisXDocument.View.DisableAutoUpdate()
            Dim oParentNode As IXMLDOMNode
            oParentNode = thisXDocument.DOM.selectSingleNode("//my:myFields")
            Dim numRows As Integer = thisXDocument.DOM.selectNodes("//my:myFields/my:MovementDetail").length
            Dim last As Integer
            Dim node As IXMLDOMNode
            Dim status As String
            Dim i As Integer

            For i = 1 To numRows
                last = thisXDocument.DOM.selectNodes("my:myFields/my:MovementDetail").length
                If i > last Then
                    Exit Sub
                End If
                node = thisXDocument.DOM.selectSingleNode("//my:myFields/my:MovementDetail[" & i & "]")
                status = thisXDocument.DOM.selectSingleNode("//my:myFields/my:MovementDetail[" & i & "]/my:MovementType").text
                If status = "0" Then
                    oParentNode.removeChild(node)
                    numRows = numRows - 1
                    i = i - 1
                End If
            Next
            thisXDocument.View.EnableAutoUpdate()

Yes I know why this is happeing. I try to explain. So MovementDetail is your repeating section. You check if the field MovementType value is equal to 0, if yes you delete it and now there comes your mistake. You have set "i" to 1 in your for statement but you also decrement it if you found status = 0. Imagine that you will find status = 0 in you first run so at that time i would be 1 then you decrement it so it is 0 now. then in the next run you say node = .....MovementDetail["&i&"] which would be 0 now. Point is that there is no position 0 for repeating sections. Anyway even if you could delete it now and would decrement i again to -1 i guess you for statement would't like that to much. Does this help ?