When ScreenFlow encounters a major upgrade, it presents an interactive dialogue that invites you to evaluate the new version. Click Try Now to download the evaluation version.After you have decided to try the evaluation version, you are shown a secondary prompt to make it clear that you are downloading an evaluation. Click Continue to continue on in the upgrading process. (Notice that the Continue button is not the default.)After clicking Continue, the download and installation begins, and the new version of ScreenFlow will be installed on you computer.