Commented Unassigned: Crashes on XLWorkbook workbook = new XLWorkbook(); [9314]

Hello all. Apparently the no-nonsense way to use ClosedXML doesn't have enough nonsense in it. I'm crashing on the very first command it should use!

Attached is a picture of the error
Comments: ** Comment from web user: metalrose **

Have you referenced the OpenXML DLL ? This needs to be referenced as well as ClosedXML.

Available here:

[TEXT](https://www.codeplex.com/Download?ProjectName=closedxml&DownloadId=177539)