Dealing with Power Pivot to Tabular Upgrade Errors

Upgrading from Power Pivot workbooks to SSAS Tabular models is usually a pretty seamless process. This is part of the beauty of the relationship between Tabular and Power Pivot. This allows an Analyst to get started on a project using Power Pivot and when new requirements like row level security are needed IT can upgrade the workbook to Tabular and add the security feature.