Android Question Interpreting Error log

if send.tag <radix_flag then

Sub Abtn_click
    If Settings(0,2) = 0 Then Vibrate.Vibrate (50)         ' Vibrate phone for 50 ms
    If Settings(1,2) = 1 Then
        MP.Stop
        MP.Load(File.DirAssets,"Windows XP start.wav")
        MP.Play
    End If

    If Record_flag = 0 Then Idisplay.Text = ""
   
'Handles the reading of keys 0-9
    Private send As View
    send = Sender
   
Log("Sender-  "&Sender)
Log("Send.tag-  "&send.Tag)     'Logs empty string

    If shift_flag = 1 Then
        shift_flag = 0
        lblShift.Text = ""
        If Radix_Flag <> 10 Then Return
        If Play_Flag = 1 Or Record_flag = 1 Then
            Idisplay.Text = "Illegal Input"
            Return
        End If       
        FNum = send.Tag
        Play_Flag = 1
        FPLAY
        Return
    End If
   
    If send.tag < Radix_Flag Then
        If Record_flag = 1 And input_flag = 0 Then
            Step_count = Step_count + 1
            Recording(FNum,Step_count,0) = "VAL"
        End If       
        If Record_flag = 1 Then
            If Idisplay.Text = "Recording" Then Idisplay.Text = ""
            If IDispTXT_flag = 1 Then Idisplay.Text = IDispTXT
            IDispTXT_flag = 0
            Idisplay.Text = Idisplay.Text&send.Tag
        End If
        input_flag = 1
        NDisplay(send.Tag)
        lblEXP.Text = ""
        If Two_flag = 1 Then
            Idisplay.Text = IDispTXT
            Two_flag = 0
        End If
        If Round_Flag = 1 Then   'If rounding function is active.
            IntDis = Abs(Buffer)
            IntDis = Min(IntDis, MaxRounding)
            If Truncate_Flag = 1 Then
                Idisplay.Text = "Truncate to " & IntDis & " decimal places"
            Else
                Idisplay.Text = "Round to " & IntDis & " decimal places"
            End If
        End If
    End If
End Sub