title: Excel Add In's Custom Ribbon Tab Will Not Display
body: <p>I've created an application level add-in for Excel to automate some tasks. I used the VS2012 template Visual C# > Office > 2010 > Excel 2010 Add-In.</p>
  
  <p>Rather than having an action pane open every time Excel does, I've opted to create a custom ribbon tab following these instructions:</p>
  
  <p><a href="http://msdn.microsoft.com/en-us/library/vstudio/bb386104.aspx" rel="noreferrer">http://msdn.microsoft.com/en-us/library/vstudio/bb386104.aspx</a></p>
  
  <p>However, when I build my project, the tab does not display. I have verified the add-in is loading, and all of its features function properly, except the Ribbon. I created a simple form to test this, which loads as expected.</p>
  
  <p>I then tried creating an Excel 2010 Workbook project. After adding the Ribbon (using the same steps as before) and building the project, it simply works; the ribbon tab appears as expected.</p>
  
  <p>I've tried overriding ThisAddIn.CreateRibbonExtensibilityObject() to return my ribbon object, created via Globals.Factory.GetRibbonFactory().CreateRibbonManager. Again, no dice.</p>
  
  <p>I'm at a loss now.</p>