Following this link will close this rehearsal?
Sides should always be in PDF format. If your sides are a .doc they will download.
However, if PDF files download for you as well, your settings in Chrome might be to blame.
Try changing the following settings to fix this.
Chrome will now open PDFs automatically when you click them.
More information here: https://support.google.com/chrome/answer/6213030?hl=en-GB