Commented Unassigned: GetValue returns empty string for cells in some xls files [11928]

I'm having trouble using GetValue on some xls files. The attached file is one example. GetValue returns an empty string for virtually all text fields (including A1). Looking at the DataTable generated through AsDataSet also has the fields empty when they do in fact have text.
Comments: ** Comment from web user: slide_o_mix **

I am also seeing this issue. I can't upload the spreadsheet that I have because it contains company secrets, but if I use the Invoice xls that moorhs uploaded, I see the same thing.