Spreadsheet Excel Writer

Hi. My name is Ana, I'm talking from Brazil. I'm a PHP developer and I've been trying to use Spreadsheet Excel Writer to generate reports in the company I work. The package is incredible good and complete, and it's making my life a lot easier, but I've been experiencing some difficulties with the number of rows in my files. I want to generate an Excel file with 13 columns and about 2.000 rows, filled with strings that can be a little large (it's a database with names and addresses). When I try to do it, the browser says that it's not possible to find the file. I've done some tests and the problem only happens when the file has more than 920 rows. Is there any way to change this limit? Thank you.