Hi, I have an application that reads in a bunch of values from an excel application. Now this works fine on my computer but when I deploy it to a few other computers, some of them return an 'Object Reference not set to an instance of an object' error when I open it.

Here is my code...

Dim ExcelApp As Excel.Application
Dim ExcelBook As Excel.Workbook

ExcelApp = New Excel.Application
ExcelBook = ExcelApp.Workbooks.Open(Filename) ' error is here

Keep in mind that this code works on some computers, just not all of them.

Thanks,

Luc