Created Unassigned: System.TypeInitializationException [9213]

Hi,

I am trying to use the ClosedXML library to create an Excel workbook from a VB.Net Windows Form app and am getting a __System.TypeInitializationException__ error when I try and create an XLWorkbook with the following code:

Dim workbook = New XLWorkbook()

I have included the ClosedXML.dll and the DocumentFormat.OpenXml.dll in my project properties (see attachment) as well as

Imports ClosedXML.Excel

Any pointers to what else could be wrong would be appreciated.

Thanks,

M