I am having problems downloading a pattern. When I click on the pattern file link, all I get is a blank page.

This is a problem with the Web browser you are using and how it is configured. We cannot help you with that. However, you can try right-clicking on the link and saving the file to your computer, and then opening it up with the Adobe Reader. In 99% of the cases, this works. Otherwise, you will need to have somebody help you with your browser settings.