Excel 2016 16.0.4432.1000 64bit - Windows 7 Official release 1.4.3.0 Excel runs fine, but when I try to open the VBE I get Rubberduck Add-In could not be loaded Object reference not set to an instance ...

Object Reference Not Set to an Instance of an Object on Windows Interestingly, this issue isn’t exclusive to Microsoft Visual Studio and may appear in other applications relying on Visual Studio ...

What is the current behavior? This only happens on the IIS server and not my Visual Studio machine. I get the following stack trace when I try to run the XlWorkbook.SaveAs(memoryStream) extension.