If the "Download" button is greyed out, it means that you have missed a measurement. Press "Previous" until you find the missing measurement and fill it in. If the "Download" button works but the screen freezes, first make sure there are no errors in your measurements (ie a chest measurement of 200" instead of 20"), otherwise contact Jill via the "Contact Us" form on the website.If you are using Firefox, use a different browser for now - I am working on improving the website for all browsers, but currently it works best in Chrome.