VS 2010 / Hyperlink To File Only Works In IE?

I'm binding data from a SQL table to a GridView. The data looks like this:

During the initial bind, all I'm pulling is the raw data and adding it. As each row is bound, I convert the latter two columns into the hyperlinks like so:

VB.NET Code:

'Get the second link text            Dim lnktextBOM As String = e.Row.Cells(2).Text             'Create link            Dim lnkBOM As New HyperLink            lnkBOM.NavigateUrl = getSqlData.getBomURL("notebooks", e.Row.Cells(0).Text, e.Row.Cells(1).Text)            lnkBOM.Text = lnktextBOM            'Add the link to the cell            e.Row.Cells(2).Controls.Add(lnkBOM)

Which all works great. However, if I'm using Chrome and I click on the URL, nothing happens. On FireFox, a 404 is thrown. But on IE, it works perfectly.

what I'm doing wrong here? Below is an example of the URL:

CTSFS01SharedOPERATIONDWURBOMAdamo__PROJECT A.xls