Hi Kris,
We regret for the delay in responding.
Problem with not being able to open a file: The only issue I can think of is that the file should not opened in Excel or be locked by some other process when ExcelRW tries to load it? Are both the files located in the same folder?
You can use our Direct-Trac support system for timely support. We apologize for the delay in answering these questions.
http://www.syncfusion.com/Support/DirectTrac/default.aspx
Thank you for your patience.
Regards,
Davis