diff --git a/EgtBEAMWALL.ViewerOptimizer/FeatureListManager/FeatureListManagerVM.vb b/EgtBEAMWALL.ViewerOptimizer/FeatureListManager/FeatureListManagerVM.vb
index b26ded01..42525d5b 100644
--- a/EgtBEAMWALL.ViewerOptimizer/FeatureListManager/FeatureListManagerVM.vb
+++ b/EgtBEAMWALL.ViewerOptimizer/FeatureListManager/FeatureListManagerVM.vb
@@ -170,17 +170,22 @@ Public Class FeatureListManagerVM
    Private Sub CreateMacroTable()
       Dim nMacroW, nMacroH As Integer
       If Map.refProjectVM.BTLStructureVM.SelBTLPart.nROTATED = 0 OrElse Map.refProjectVM.BTLStructureVM.SelBTLPart.nROTATED = 180 Then
-         If Map.refProjectVM.BTLStructureVM.SelBTLPart.m_SelBTLFeatureVM.nSelSIDE = 1 OrElse Map.refProjectVM.BTLStructureVM.SelBTLPart.m_SelBTLFeatureVM.nSelSIDE = 3 Then
-            nMacroW = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlW
-            nMacroH = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlH
-         Else
-            nMacroW = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlH
-            nMacroH = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlW
-         End If
-      ElseIf Map.refProjectVM.BTLStructureVM.SelBTLPart.nROTATED = 90 OrElse Map.refProjectVM.BTLStructureVM.SelBTLPart.nROTATED = 270 Then
-         If Map.refProjectVM.BTLStructureVM.SelBTLPart.m_SelBTLFeatureVM.nSelSIDE = 1 OrElse Map.refProjectVM.BTLStructureVM.SelBTLPart.m_SelBTLFeatureVM.nSelSIDE = 3 Then
-            nMacroW = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlH
-            nMacroH = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlW
+         If Not IsNothing(Map.refProjectVM.BTLStructureVM) AndAlso Not IsNothing(Map.refProjectVM.BTLStructureVM.SelBTLPart) AndAlso Not IsNothing(Map.refProjectVM.BTLStructureVM.SelBTLPart.m_SelBTLFeatureVM) Then
+            If Map.refProjectVM.BTLStructureVM.SelBTLPart.m_SelBTLFeatureVM.nSelSIDE = 1 OrElse Map.refProjectVM.BTLStructureVM.SelBTLPart.m_SelBTLFeatureVM.nSelSIDE = 3 Then
+               nMacroW = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlW
+               nMacroH = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlH
+            Else
+               nMacroW = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlH
+               nMacroH = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlW
+            End If
+         ElseIf Map.refProjectVM.BTLStructureVM.SelBTLPart.nROTATED = 90 OrElse Map.refProjectVM.BTLStructureVM.SelBTLPart.nROTATED = 270 Then
+            If Map.refProjectVM.BTLStructureVM.SelBTLPart.m_SelBTLFeatureVM.nSelSIDE = 1 OrElse Map.refProjectVM.BTLStructureVM.SelBTLPart.m_SelBTLFeatureVM.nSelSIDE = 3 Then
+               nMacroW = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlH
+               nMacroH = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlW
+            Else
+               nMacroW = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlW
+               nMacroH = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlH
+            End If
          Else
             nMacroW = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlW
             nMacroH = Map.refProjectVM.BTLStructureVM.SelBTLPart.dBtlH