From 40ab6d0f36b26f01e59989524358be4d1a969eb4 Mon Sep 17 00:00:00 2001
From: Christian Wade <chwade@microsoft.com>
Date: Tue, 17 Mar 2020 20:13:41 -0700
Subject: [PATCH] TomInternalException hander

---
 BismNormalizer/AlmToolkit/ComparisonForm.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/BismNormalizer/AlmToolkit/ComparisonForm.cs b/BismNormalizer/AlmToolkit/ComparisonForm.cs
index b80195d..ceb0567 100644
--- a/BismNormalizer/AlmToolkit/ComparisonForm.cs
+++ b/BismNormalizer/AlmToolkit/ComparisonForm.cs
@@ -16,6 +16,7 @@ using BismNormalizer.TabularCompare.Core;
 using BismNormalizer.TabularCompare.UI;
 using CefSharp;
 using CefSharp.WinForms;
+using Microsoft.AnalysisServices.Tabular;
 
 namespace AlmToolkit
 {
@@ -273,6 +274,11 @@ namespace AlmToolkit
                 this.CompareTabularModels();
                 toolStripStatusLabel1.Text = "ALM Toolkit - finished comparing datasets";
             }
+            catch (TomInternalException)
+            {
+                MessageBox.Show("TOM internal serialization error occurred. Please ensure JSON is valid tabular model metadata.", Utils.AssemblyProduct, MessageBoxButtons.OK, MessageBoxIcon.Error);
+                SetNotComparedState();
+            }
             catch (Exception exc)
             {
                 MessageBox.Show(exc.Message, Utils.AssemblyProduct, MessageBoxButtons.OK, MessageBoxIcon.Error);